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(x^3+4*x^2-9*x+36)/((x-3)*(x+4))=0 la ecuación

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Solución numérica:

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Solución

Ha introducido [src]
 3      2               
x  + 4*x  - 9*x + 36    
-------------------- = 0
  (x - 3)*(x + 4)       
$$\frac{\left(- 9 x + \left(x^{3} + 4 x^{2}\right)\right) + 36}{\left(x - 3\right) \left(x + 4\right)} = 0$$
Gráfica
Suma y producto de raíces [src]
suma
         __________________                               /                                     __________________\            __________________                               /           __________________                          \                                      __________________
      3 /           ______                                |               ___            ___ 3 /           ______ |         3 /           ______                                |    ___ 3 /           ______                 ___       |                                   3 /           ______ 
  4   \/  712 + 9*\/ 5277                43               |          43*\/ 3           \/ 3 *\/  712 + 9*\/ 5277  |     4   \/  712 + 9*\/ 5277                43               |  \/ 3 *\/  712 + 9*\/ 5277             43*\/ 3        |     4              43             \/  712 + 9*\/ 5277  
- - + --------------------- + ----------------------- + I*|- ----------------------- + ---------------------------| + - - + --------------------- + ----------------------- + I*|- --------------------------- + -----------------------| + - - - ----------------------- - ---------------------
  3             6                  __________________     |       __________________                6             |     3             6                  __________________     |               6                     __________________|     3        __________________             3          
                                3 /           ______      |    3 /           ______                               |                                   3 /           ______      |                                  3 /           ______ |           3 /           ______                         
                              6*\/  712 + 9*\/ 5277       \  6*\/  712 + 9*\/ 5277                                /                                 6*\/  712 + 9*\/ 5277       \                                6*\/  712 + 9*\/ 5277  /         3*\/  712 + 9*\/ 5277                          
$$\left(- \frac{\sqrt[3]{9 \sqrt{5277} + 712}}{3} - \frac{4}{3} - \frac{43}{3 \sqrt[3]{9 \sqrt{5277} + 712}}\right) + \left(\left(- \frac{4}{3} + \frac{43}{6 \sqrt[3]{9 \sqrt{5277} + 712}} + \frac{\sqrt[3]{9 \sqrt{5277} + 712}}{6} + i \left(- \frac{\sqrt{3} \sqrt[3]{9 \sqrt{5277} + 712}}{6} + \frac{43 \sqrt{3}}{6 \sqrt[3]{9 \sqrt{5277} + 712}}\right)\right) + \left(- \frac{4}{3} + \frac{43}{6 \sqrt[3]{9 \sqrt{5277} + 712}} + \frac{\sqrt[3]{9 \sqrt{5277} + 712}}{6} + i \left(- \frac{43 \sqrt{3}}{6 \sqrt[3]{9 \sqrt{5277} + 712}} + \frac{\sqrt{3} \sqrt[3]{9 \sqrt{5277} + 712}}{6}\right)\right)\right)$$
=
       /                                     __________________\     /           __________________                          \
       |               ___            ___ 3 /           ______ |     |    ___ 3 /           ______                 ___       |
       |          43*\/ 3           \/ 3 *\/  712 + 9*\/ 5277  |     |  \/ 3 *\/  712 + 9*\/ 5277             43*\/ 3        |
-4 + I*|- ----------------------- + ---------------------------| + I*|- --------------------------- + -----------------------|
       |       __________________                6             |     |               6                     __________________|
       |    3 /           ______                               |     |                                  3 /           ______ |
       \  6*\/  712 + 9*\/ 5277                                /     \                                6*\/  712 + 9*\/ 5277  /
$$-4 + i \left(- \frac{\sqrt{3} \sqrt[3]{9 \sqrt{5277} + 712}}{6} + \frac{43 \sqrt{3}}{6 \sqrt[3]{9 \sqrt{5277} + 712}}\right) + i \left(- \frac{43 \sqrt{3}}{6 \sqrt[3]{9 \sqrt{5277} + 712}} + \frac{\sqrt{3} \sqrt[3]{9 \sqrt{5277} + 712}}{6}\right)$$
producto
/         __________________                               /                                     __________________\\ /         __________________                               /           __________________                          \\ /                                   __________________\
|      3 /           ______                                |               ___            ___ 3 /           ______ || |      3 /           ______                                |    ___ 3 /           ______                 ___       || |                                3 /           ______ |
|  4   \/  712 + 9*\/ 5277                43               |          43*\/ 3           \/ 3 *\/  712 + 9*\/ 5277  || |  4   \/  712 + 9*\/ 5277                43               |  \/ 3 *\/  712 + 9*\/ 5277             43*\/ 3        || |  4              43             \/  712 + 9*\/ 5277  |
|- - + --------------------- + ----------------------- + I*|- ----------------------- + ---------------------------||*|- - + --------------------- + ----------------------- + I*|- --------------------------- + -----------------------||*|- - - ----------------------- - ---------------------|
|  3             6                  __________________     |       __________________                6             || |  3             6                  __________________     |               6                     __________________|| |  3        __________________             3          |
|                                3 /           ______      |    3 /           ______                               || |                                3 /           ______      |                                  3 /           ______ || |        3 /           ______                         |
\                              6*\/  712 + 9*\/ 5277       \  6*\/  712 + 9*\/ 5277                                // \                              6*\/  712 + 9*\/ 5277       \                                6*\/  712 + 9*\/ 5277  // \      3*\/  712 + 9*\/ 5277                          /
$$\left(- \frac{4}{3} + \frac{43}{6 \sqrt[3]{9 \sqrt{5277} + 712}} + \frac{\sqrt[3]{9 \sqrt{5277} + 712}}{6} + i \left(- \frac{43 \sqrt{3}}{6 \sqrt[3]{9 \sqrt{5277} + 712}} + \frac{\sqrt{3} \sqrt[3]{9 \sqrt{5277} + 712}}{6}\right)\right) \left(- \frac{4}{3} + \frac{43}{6 \sqrt[3]{9 \sqrt{5277} + 712}} + \frac{\sqrt[3]{9 \sqrt{5277} + 712}}{6} + i \left(- \frac{\sqrt{3} \sqrt[3]{9 \sqrt{5277} + 712}}{6} + \frac{43 \sqrt{3}}{6 \sqrt[3]{9 \sqrt{5277} + 712}}\right)\right) \left(- \frac{\sqrt[3]{9 \sqrt{5277} + 712}}{3} - \frac{4}{3} - \frac{43}{3 \sqrt[3]{9 \sqrt{5277} + 712}}\right)$$
=
-36
$$-36$$
-36
Respuesta rápida [src]
              __________________                               /                                     __________________\
           3 /           ______                                |               ___            ___ 3 /           ______ |
       4   \/  712 + 9*\/ 5277                43               |          43*\/ 3           \/ 3 *\/  712 + 9*\/ 5277  |
x1 = - - + --------------------- + ----------------------- + I*|- ----------------------- + ---------------------------|
       3             6                  __________________     |       __________________                6             |
                                     3 /           ______      |    3 /           ______                               |
                                   6*\/  712 + 9*\/ 5277       \  6*\/  712 + 9*\/ 5277                                /
$$x_{1} = - \frac{4}{3} + \frac{43}{6 \sqrt[3]{9 \sqrt{5277} + 712}} + \frac{\sqrt[3]{9 \sqrt{5277} + 712}}{6} + i \left(- \frac{43 \sqrt{3}}{6 \sqrt[3]{9 \sqrt{5277} + 712}} + \frac{\sqrt{3} \sqrt[3]{9 \sqrt{5277} + 712}}{6}\right)$$
              __________________                               /           __________________                          \
           3 /           ______                                |    ___ 3 /           ______                 ___       |
       4   \/  712 + 9*\/ 5277                43               |  \/ 3 *\/  712 + 9*\/ 5277             43*\/ 3        |
x2 = - - + --------------------- + ----------------------- + I*|- --------------------------- + -----------------------|
       3             6                  __________________     |               6                     __________________|
                                     3 /           ______      |                                  3 /           ______ |
                                   6*\/  712 + 9*\/ 5277       \                                6*\/  712 + 9*\/ 5277  /
$$x_{2} = - \frac{4}{3} + \frac{43}{6 \sqrt[3]{9 \sqrt{5277} + 712}} + \frac{\sqrt[3]{9 \sqrt{5277} + 712}}{6} + i \left(- \frac{\sqrt{3} \sqrt[3]{9 \sqrt{5277} + 712}}{6} + \frac{43 \sqrt{3}}{6 \sqrt[3]{9 \sqrt{5277} + 712}}\right)$$
                                        __________________
                                     3 /           ______ 
       4              43             \/  712 + 9*\/ 5277  
x3 = - - - ----------------------- - ---------------------
       3        __________________             3          
             3 /           ______                         
           3*\/  712 + 9*\/ 5277                          
$$x_{3} = - \frac{\sqrt[3]{9 \sqrt{5277} + 712}}{3} - \frac{4}{3} - \frac{43}{3 \sqrt[3]{9 \sqrt{5277} + 712}}$$
x3 = -(9*sqrt(5277) + 712)^(1/3)/3 - 4/3 - 43/(3*(9*sqrt(5277) + 712)^(1/3))
Respuesta numérica [src]
x1 = 1.16177081654556 + 2.08405873787071*i
x2 = 1.16177081654556 - 2.08405873787071*i
x3 = -6.32354163309112
x3 = -6.32354163309112