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(x-5)*((x-7)/3)^2+(x-5)^3-2*((x-7)/3)^2-64=0 la ecuación

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Solución numérica:

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Solución

Ha introducido [src]
               2                       2         
        /x - 7\           3     /x - 7\          
(x - 5)*|-----|  + (x - 5)  - 2*|-----|  - 64 = 0
        \  3  /                 \  3  /          
$$\left(- 2 \left(\frac{x - 7}{3}\right)^{2} + \left(\left(\frac{x - 7}{3}\right)^{2} \left(x - 5\right) + \left(x - 5\right)^{3}\right)\right) - 64 = 0$$
Respuesta rápida [src]
               ___________________                                   /                                           ___________________\
              /            ______                                    |                                          /            ______ |
             /  3636   9*\/ 6529                                     |                                  ___    /  3636   9*\/ 6529  |
          3 /   ---- + ----------                                    |                ___             \/ 3 *3 /   ---- + ---------- |
     26   \/    125        25                     9                  |            9*\/ 3                    \/    125        25     |
x1 = -- - ------------------------ + --------------------------- + I*|- --------------------------- - ------------------------------|
     5               2                       ___________________     |          ___________________                 2               |
                                            /            ______      |         /            ______                                  |
                                           /  3636   9*\/ 6529       |        /  3636   9*\/ 6529                                   |
                                     50*3 /   ---- + ----------      |  50*3 /   ---- + ----------                                  |
                                        \/    125        25          \     \/    125        25                                      /
$$x_{1} = - \frac{\sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}}{2} + \frac{9}{50 \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}} + \frac{26}{5} + i \left(- \frac{\sqrt{3} \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}}{2} - \frac{9 \sqrt{3}}{50 \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}}\right)$$
               ___________________                                   /           ___________________                              \
              /            ______                                    |          /            ______                               |
             /  3636   9*\/ 6529                                     |  ___    /  3636   9*\/ 6529                                |
          3 /   ---- + ----------                                    |\/ 3 *3 /   ---- + ----------                  ___          |
     26   \/    125        25                     9                  |      \/    125        25                  9*\/ 3           |
x2 = -- - ------------------------ + --------------------------- + I*|------------------------------ + ---------------------------|
     5               2                       ___________________     |              2                          ___________________|
                                            /            ______      |                                        /            ______ |
                                           /  3636   9*\/ 6529       |                                       /  3636   9*\/ 6529  |
                                     50*3 /   ---- + ----------      |                                 50*3 /   ---- + ---------- |
                                        \/    125        25          \                                    \/    125        25     /
$$x_{2} = - \frac{\sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}}{2} + \frac{9}{50 \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}} + \frac{26}{5} + i \left(\frac{9 \sqrt{3}}{50 \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}} + \frac{\sqrt{3} \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}}{2}\right)$$
               ___________________                              
              /            ______                               
     26      /  3636   9*\/ 6529                  9             
x3 = -- + 3 /   ---- + ----------  - ---------------------------
     5    \/    125        25                ___________________
                                            /            ______ 
                                           /  3636   9*\/ 6529  
                                     25*3 /   ---- + ---------- 
                                        \/    125        25     
$$x_{3} = - \frac{9}{25 \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}} + \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}} + \frac{26}{5}$$
x3 = -9/(25*(3636/125 + 9*sqrt(6529)/25)^(1/3)) + (3636/125 + 9*sqrt(6529)/25)^(1/3) + 26/5
Suma y producto de raíces [src]
suma
          ___________________                                   /                                           ___________________\             ___________________                                   /           ___________________                              \                                                              
         /            ______                                    |                                          /            ______ |            /            ______                                    |          /            ______                               |                                                              
        /  3636   9*\/ 6529                                     |                                  ___    /  3636   9*\/ 6529  |           /  3636   9*\/ 6529                                     |  ___    /  3636   9*\/ 6529                                |             ___________________                              
     3 /   ---- + ----------                                    |                ___             \/ 3 *3 /   ---- + ---------- |        3 /   ---- + ----------                                    |\/ 3 *3 /   ---- + ----------                  ___          |            /            ______                               
26   \/    125        25                     9                  |            9*\/ 3                    \/    125        25     |   26   \/    125        25                     9                  |      \/    125        25                  9*\/ 3           |   26      /  3636   9*\/ 6529                  9             
-- - ------------------------ + --------------------------- + I*|- --------------------------- - ------------------------------| + -- - ------------------------ + --------------------------- + I*|------------------------------ + ---------------------------| + -- + 3 /   ---- + ----------  - ---------------------------
5               2                       ___________________     |          ___________________                 2               |   5               2                       ___________________     |              2                          ___________________|   5    \/    125        25                ___________________
                                       /            ______      |         /            ______                                  |                                          /            ______      |                                        /            ______ |                                          /            ______ 
                                      /  3636   9*\/ 6529       |        /  3636   9*\/ 6529                                   |                                         /  3636   9*\/ 6529       |                                       /  3636   9*\/ 6529  |                                         /  3636   9*\/ 6529  
                                50*3 /   ---- + ----------      |  50*3 /   ---- + ----------                                  |                                   50*3 /   ---- + ----------      |                                 50*3 /   ---- + ---------- |                                   25*3 /   ---- + ---------- 
                                   \/    125        25          \     \/    125        25                                      /                                      \/    125        25          \                                    \/    125        25     /                                      \/    125        25     
$$\left(- \frac{9}{25 \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}} + \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}} + \frac{26}{5}\right) + \left(\left(- \frac{\sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}}{2} + \frac{9}{50 \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}} + \frac{26}{5} + i \left(- \frac{\sqrt{3} \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}}{2} - \frac{9 \sqrt{3}}{50 \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}}\right)\right) + \left(- \frac{\sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}}{2} + \frac{9}{50 \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}} + \frac{26}{5} + i \left(\frac{9 \sqrt{3}}{50 \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}} + \frac{\sqrt{3} \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}}{2}\right)\right)\right)$$
=
       /           ___________________                              \     /                                           ___________________\
       |          /            ______                               |     |                                          /            ______ |
       |  ___    /  3636   9*\/ 6529                                |     |                                  ___    /  3636   9*\/ 6529  |
       |\/ 3 *3 /   ---- + ----------                  ___          |     |                ___             \/ 3 *3 /   ---- + ---------- |
78     |      \/    125        25                  9*\/ 3           |     |            9*\/ 3                    \/    125        25     |
-- + I*|------------------------------ + ---------------------------| + I*|- --------------------------- - ------------------------------|
5      |              2                          ___________________|     |          ___________________                 2               |
       |                                        /            ______ |     |         /            ______                                  |
       |                                       /  3636   9*\/ 6529  |     |        /  3636   9*\/ 6529                                   |
       |                                 50*3 /   ---- + ---------- |     |  50*3 /   ---- + ----------                                  |
       \                                    \/    125        25     /     \     \/    125        25                                      /
$$\frac{78}{5} + i \left(- \frac{\sqrt{3} \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}}{2} - \frac{9 \sqrt{3}}{50 \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}}\right) + i \left(\frac{9 \sqrt{3}}{50 \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}} + \frac{\sqrt{3} \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}}{2}\right)$$
producto
/          ___________________                                   /                                           ___________________\\ /          ___________________                                   /           ___________________                              \\                                                              
|         /            ______                                    |                                          /            ______ || |         /            ______                                    |          /            ______                               ||                                                              
|        /  3636   9*\/ 6529                                     |                                  ___    /  3636   9*\/ 6529  || |        /  3636   9*\/ 6529                                     |  ___    /  3636   9*\/ 6529                                || /          ___________________                              \
|     3 /   ---- + ----------                                    |                ___             \/ 3 *3 /   ---- + ---------- || |     3 /   ---- + ----------                                    |\/ 3 *3 /   ---- + ----------                  ___          || |         /            ______                               |
|26   \/    125        25                     9                  |            9*\/ 3                    \/    125        25     || |26   \/    125        25                     9                  |      \/    125        25                  9*\/ 3           || |26      /  3636   9*\/ 6529                  9             |
|-- - ------------------------ + --------------------------- + I*|- --------------------------- - ------------------------------||*|-- - ------------------------ + --------------------------- + I*|------------------------------ + ---------------------------||*|-- + 3 /   ---- + ----------  - ---------------------------|
|5               2                       ___________________     |          ___________________                 2               || |5               2                       ___________________     |              2                          ___________________|| |5    \/    125        25                ___________________|
|                                       /            ______      |         /            ______                                  || |                                       /            ______      |                                        /            ______ || |                                       /            ______ |
|                                      /  3636   9*\/ 6529       |        /  3636   9*\/ 6529                                   || |                                      /  3636   9*\/ 6529       |                                       /  3636   9*\/ 6529  || |                                      /  3636   9*\/ 6529  |
|                                50*3 /   ---- + ----------      |  50*3 /   ---- + ----------                                  || |                                50*3 /   ---- + ----------      |                                 50*3 /   ---- + ---------- || |                                25*3 /   ---- + ---------- |
\                                   \/    125        25          \     \/    125        25                                      // \                                   \/    125        25          \                                    \/    125        25     // \                                   \/    125        25     /
$$\left(- \frac{\sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}}{2} + \frac{9}{50 \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}} + \frac{26}{5} + i \left(\frac{9 \sqrt{3}}{50 \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}} + \frac{\sqrt{3} \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}}{2}\right)\right) \left(- \frac{\sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}}{2} + \frac{9}{50 \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}} + \frac{26}{5} + i \left(- \frac{\sqrt{3} \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}}{2} - \frac{9 \sqrt{3}}{50 \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}}\right)\right) \left(- \frac{9}{25 \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}}} + \sqrt[3]{\frac{3636}{125} + \frac{9 \sqrt{6529}}{25}} + \frac{26}{5}\right)$$
=
1022/5
$$\frac{1022}{5}$$
1022/5
Respuesta numérica [src]
x1 = 3.30905100963551 + 3.43614089531868*i
x2 = 8.98189798072898
x3 = 3.30905100963551 - 3.43614089531868*i
x3 = 3.30905100963551 - 3.43614089531868*i