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5x^2-2sqrt(2x)-1=0 la ecuación

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Solución numérica:

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Solución

Ha introducido [src]
   2       _____        
5*x  - 2*\/ 2*x  - 1 = 0
$$\left(5 x^{2} - 2 \sqrt{2 x}\right) - 1 = 0$$
Gráfica
Respuesta rápida [src]
                                                                                                 ________________________________________________________________________________________________________________________________________________
                                                                                                /             ___________________                                                                                                                
                                                                                               /             /             _____                                                                                                                 
                                                                                              /   8         /   148    4*\/ 141                  8                                                       16                                      
                                                                                             /    -- - 2*3 /   ----- + ---------  - ---------------------------- + ----------------------------------------------------------------------------- 
               ________________________________________________________________             /     15     \/    16875      5625               ___________________                ________________________________________________________________ 
              /             ___________________                                            /                                                /             _____                /             ___________________                                 
             /             /             _____                                            /                                                /   148    4*\/ 141                /             /             _____                                  
            /   4         /   148    4*\/ 141                  8                         /                                          225*3 /   ----- + ---------              /   4         /   148    4*\/ 141                  8                
           /    -- + 2*3 /   ----- + ---------  + ----------------------------          /                                               \/    16875      5625      25*      /    -- + 2*3 /   ----- + ---------  + ----------------------------  
          /     15     \/    16875      5625               ___________________         /                                                                                   /     15     \/    16875      5625               ___________________  
         /                                                /             _____         /                                                                                   /                                                /             _____   
        /                                                /   148    4*\/ 141         /                                                                                   /                                                /   148    4*\/ 141    
       /                                          225*3 /   ----- + ---------       /                                                                                   /                                          225*3 /   ----- + ---------   
     \/                                               \/    16875      5625       \/                                                                                  \/                                               \/    16875      5625     
x1 = -------------------------------------------------------------------------- + ---------------------------------------------------------------------------------------------------------------------------------------------------------------
                                         2                                                                                                                       2                                                                               
$$x_{1} = \frac{\sqrt{- 2 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}} - \frac{8}{225 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}} + \frac{8}{15} + \frac{16}{25 \sqrt{\frac{8}{225 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}} + \frac{4}{15} + 2 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}}}}}{2} + \frac{\sqrt{\frac{8}{225 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}} + \frac{4}{15} + 2 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}}}{2}$$
x1 = sqrt(-2*(4*sqrt(141)/5625 + 148/16875)^(1/3) - 8/(225*(4*sqrt(141)/5625 + 148/16875)^(1/3)) + 8/15 + 16/(25*sqrt(8/(225*(4*sqrt(141)/5625 + 148/16875)^(1/3)) + 4/15 + 2*(4*sqrt(141)/5625 + 148/16875)^(1/3))))/2 + sqrt(8/(225*(4*sqrt(141)/5625 + 148/16875)^(1/3)) + 4/15 + 2*(4*sqrt(141)/5625 + 148/16875)^(1/3))/2
Suma y producto de raíces [src]
suma
                                                                                            ________________________________________________________________________________________________________________________________________________
                                                                                           /             ___________________                                                                                                                
                                                                                          /             /             _____                                                                                                                 
                                                                                         /   8         /   148    4*\/ 141                  8                                                       16                                      
                                                                                        /    -- - 2*3 /   ----- + ---------  - ---------------------------- + ----------------------------------------------------------------------------- 
          ________________________________________________________________             /     15     \/    16875      5625               ___________________                ________________________________________________________________ 
         /             ___________________                                            /                                                /             _____                /             ___________________                                 
        /             /             _____                                            /                                                /   148    4*\/ 141                /             /             _____                                  
       /   4         /   148    4*\/ 141                  8                         /                                          225*3 /   ----- + ---------              /   4         /   148    4*\/ 141                  8                
      /    -- + 2*3 /   ----- + ---------  + ----------------------------          /                                               \/    16875      5625      25*      /    -- + 2*3 /   ----- + ---------  + ----------------------------  
     /     15     \/    16875      5625               ___________________         /                                                                                   /     15     \/    16875      5625               ___________________  
    /                                                /             _____         /                                                                                   /                                                /             _____   
   /                                                /   148    4*\/ 141         /                                                                                   /                                                /   148    4*\/ 141    
  /                                          225*3 /   ----- + ---------       /                                                                                   /                                          225*3 /   ----- + ---------   
\/                                               \/    16875      5625       \/                                                                                  \/                                               \/    16875      5625     
-------------------------------------------------------------------------- + ---------------------------------------------------------------------------------------------------------------------------------------------------------------
                                    2                                                                                                                       2                                                                               
$$\frac{\sqrt{- 2 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}} - \frac{8}{225 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}} + \frac{8}{15} + \frac{16}{25 \sqrt{\frac{8}{225 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}} + \frac{4}{15} + 2 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}}}}}{2} + \frac{\sqrt{\frac{8}{225 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}} + \frac{4}{15} + 2 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}}}{2}$$
=
                                                                                            ________________________________________________________________________________________________________________________________________________
                                                                                           /             ___________________                                                                                                                
                                                                                          /             /             _____                                                                                                                 
                                                                                         /   8         /   148    4*\/ 141                  8                                                       16                                      
                                                                                        /    -- - 2*3 /   ----- + ---------  - ---------------------------- + ----------------------------------------------------------------------------- 
          ________________________________________________________________             /     15     \/    16875      5625               ___________________                ________________________________________________________________ 
         /             ___________________                                            /                                                /             _____                /             ___________________                                 
        /             /             _____                                            /                                                /   148    4*\/ 141                /             /             _____                                  
       /   4         /   148    4*\/ 141                  8                         /                                          225*3 /   ----- + ---------              /   4         /   148    4*\/ 141                  8                
      /    -- + 2*3 /   ----- + ---------  + ----------------------------          /                                               \/    16875      5625      25*      /    -- + 2*3 /   ----- + ---------  + ----------------------------  
     /     15     \/    16875      5625               ___________________         /                                                                                   /     15     \/    16875      5625               ___________________  
    /                                                /             _____         /                                                                                   /                                                /             _____   
   /                                                /   148    4*\/ 141         /                                                                                   /                                                /   148    4*\/ 141    
  /                                          225*3 /   ----- + ---------       /                                                                                   /                                          225*3 /   ----- + ---------   
\/                                               \/    16875      5625       \/                                                                                  \/                                               \/    16875      5625     
-------------------------------------------------------------------------- + ---------------------------------------------------------------------------------------------------------------------------------------------------------------
                                    2                                                                                                                       2                                                                               
$$\frac{\sqrt{- 2 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}} - \frac{8}{225 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}} + \frac{8}{15} + \frac{16}{25 \sqrt{\frac{8}{225 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}} + \frac{4}{15} + 2 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}}}}}{2} + \frac{\sqrt{\frac{8}{225 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}} + \frac{4}{15} + 2 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}}}{2}$$
producto
                                                                                            ________________________________________________________________________________________________________________________________________________
                                                                                           /             ___________________                                                                                                                
                                                                                          /             /             _____                                                                                                                 
                                                                                         /   8         /   148    4*\/ 141                  8                                                       16                                      
                                                                                        /    -- - 2*3 /   ----- + ---------  - ---------------------------- + ----------------------------------------------------------------------------- 
          ________________________________________________________________             /     15     \/    16875      5625               ___________________                ________________________________________________________________ 
         /             ___________________                                            /                                                /             _____                /             ___________________                                 
        /             /             _____                                            /                                                /   148    4*\/ 141                /             /             _____                                  
       /   4         /   148    4*\/ 141                  8                         /                                          225*3 /   ----- + ---------              /   4         /   148    4*\/ 141                  8                
      /    -- + 2*3 /   ----- + ---------  + ----------------------------          /                                               \/    16875      5625      25*      /    -- + 2*3 /   ----- + ---------  + ----------------------------  
     /     15     \/    16875      5625               ___________________         /                                                                                   /     15     \/    16875      5625               ___________________  
    /                                                /             _____         /                                                                                   /                                                /             _____   
   /                                                /   148    4*\/ 141         /                                                                                   /                                                /   148    4*\/ 141    
  /                                          225*3 /   ----- + ---------       /                                                                                   /                                          225*3 /   ----- + ---------   
\/                                               \/    16875      5625       \/                                                                                  \/                                               \/    16875      5625     
-------------------------------------------------------------------------- + ---------------------------------------------------------------------------------------------------------------------------------------------------------------
                                    2                                                                                                                       2                                                                               
$$\frac{\sqrt{- 2 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}} - \frac{8}{225 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}} + \frac{8}{15} + \frac{16}{25 \sqrt{\frac{8}{225 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}} + \frac{4}{15} + 2 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}}}}}{2} + \frac{\sqrt{\frac{8}{225 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}} + \frac{4}{15} + 2 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}}}{2}$$
=
                                                                                            ________________________________________________________________________________________________________________________________________________
                                                                                           /             ___________________                                                                                                                
                                                                                          /             /             _____                                                                                                                 
                                                                                         /   8         /   148    4*\/ 141                  8                                                       16                                      
                                                                                        /    -- - 2*3 /   ----- + ---------  - ---------------------------- + ----------------------------------------------------------------------------- 
          ________________________________________________________________             /     15     \/    16875      5625               ___________________                ________________________________________________________________ 
         /             ___________________                                            /                                                /             _____                /             ___________________                                 
        /             /             _____                                            /                                                /   148    4*\/ 141                /             /             _____                                  
       /   4         /   148    4*\/ 141                  8                         /                                          225*3 /   ----- + ---------              /   4         /   148    4*\/ 141                  8                
      /    -- + 2*3 /   ----- + ---------  + ----------------------------          /                                               \/    16875      5625      25*      /    -- + 2*3 /   ----- + ---------  + ----------------------------  
     /     15     \/    16875      5625               ___________________         /                                                                                   /     15     \/    16875      5625               ___________________  
    /                                                /             _____         /                                                                                   /                                                /             _____   
   /                                                /   148    4*\/ 141         /                                                                                   /                                                /   148    4*\/ 141    
  /                                          225*3 /   ----- + ---------       /                                                                                   /                                          225*3 /   ----- + ---------   
\/                                               \/    16875      5625       \/                                                                                  \/                                               \/    16875      5625     
-------------------------------------------------------------------------- + ---------------------------------------------------------------------------------------------------------------------------------------------------------------
                                    2                                                                                                                       2                                                                               
$$\frac{\sqrt{- 2 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}} - \frac{8}{225 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}} + \frac{8}{15} + \frac{16}{25 \sqrt{\frac{8}{225 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}} + \frac{4}{15} + 2 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}}}}}{2} + \frac{\sqrt{\frac{8}{225 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}} + \frac{4}{15} + 2 \sqrt[3]{\frac{4 \sqrt{141}}{5625} + \frac{148}{16875}}}}{2}$$
sqrt(4/15 + 2*(148/16875 + 4*sqrt(141)/5625)^(1/3) + 8/(225*(148/16875 + 4*sqrt(141)/5625)^(1/3)))/2 + sqrt(8/15 - 2*(148/16875 + 4*sqrt(141)/5625)^(1/3) - 8/(225*(148/16875 + 4*sqrt(141)/5625)^(1/3)) + 16/(25*sqrt(4/15 + 2*(148/16875 + 4*sqrt(141)/5625)^(1/3) + 8/(225*(148/16875 + 4*sqrt(141)/5625)^(1/3)))))/2
Respuesta numérica [src]
x1 = 0.849307837909054
x1 = 0.849307837909054