Mister Exam

Other calculators

Factor polynomial x^3-4*x^2-9*x-36

An expression to simplify:

The solution

You have entered [src]
 3      2           
x  - 4*x  - 9*x - 36
$$\left(- 9 x + \left(x^{3} - 4 x^{2}\right)\right) - 36$$
x^3 - 4*x^2 - 9*x - 36
Factorization [src]
/               ________________                                                          \ /               ________________                                                          \ /               ________________                          \
|              /         ______  /          ___\                                          | |              /         ______  /          ___\                                          | |              /         ______                           |
|      4      /  712   \/ 5277   |  1   I*\/ 3 |                      43                  | |      4      /  712   \/ 5277   |  1   I*\/ 3 |                      43                  | |      4      /  712   \/ 5277                43          |
|x + - - - 3 /   --- + -------- *|- - - -------| - ---------------------------------------|*|x + - - - 3 /   --- + -------- *|- - + -------| - ---------------------------------------|*|x + - - - 3 /   --- + --------  - -----------------------|
|      3   \/     27      3      \  2      2   /                          ________________| |      3   \/     27      3      \  2      2   /                          ________________| |      3   \/     27      3               ________________|
|                                                    /          ___\     /         ______ | |                                                    /          ___\     /         ______ | |                                        /         ______ |
|                                                    |  1   I*\/ 3 |    /  712   \/ 5277  | |                                                    |  1   I*\/ 3 |    /  712   \/ 5277  | |                                       /  712   \/ 5277  |
|                                                  9*|- - - -------|*3 /   --- + -------- | |                                                  9*|- - + -------|*3 /   --- + -------- | |                                  9*3 /   --- + -------- |
\                                                    \  2      2   / \/     27      3     / \                                                    \  2      2   / \/     27      3     / \                                    \/     27      3     /
$$\left(x + \left(- \frac{4}{3} - \frac{43}{9 \left(- \frac{1}{2} - \frac{\sqrt{3} i}{2}\right) \sqrt[3]{\frac{\sqrt{5277}}{3} + \frac{712}{27}}} - \left(- \frac{1}{2} - \frac{\sqrt{3} i}{2}\right) \sqrt[3]{\frac{\sqrt{5277}}{3} + \frac{712}{27}}\right)\right) \left(x + \left(- \frac{4}{3} - \left(- \frac{1}{2} + \frac{\sqrt{3} i}{2}\right) \sqrt[3]{\frac{\sqrt{5277}}{3} + \frac{712}{27}} - \frac{43}{9 \left(- \frac{1}{2} + \frac{\sqrt{3} i}{2}\right) \sqrt[3]{\frac{\sqrt{5277}}{3} + \frac{712}{27}}}\right)\right) \left(x + \left(- \sqrt[3]{\frac{\sqrt{5277}}{3} + \frac{712}{27}} - \frac{4}{3} - \frac{43}{9 \sqrt[3]{\frac{\sqrt{5277}}{3} + \frac{712}{27}}}\right)\right)$$
((x - 4/3 - (712/27 + sqrt(5277)/3)^(1/3)*(-1/2 - i*sqrt(3)/2) - 43/(9*(-1/2 - i*sqrt(3)/2)*(712/27 + sqrt(5277)/3)^(1/3)))*(x - 4/3 - (712/27 + sqrt(5277)/3)^(1/3)*(-1/2 + i*sqrt(3)/2) - 43/(9*(-1/2 + i*sqrt(3)/2)*(712/27 + sqrt(5277)/3)^(1/3))))*(x - 4/3 - (712/27 + sqrt(5277)/3)^(1/3) - 43/(9*(712/27 + sqrt(5277)/3)^(1/3)))
General simplification [src]
       3            2
-36 + x  - 9*x - 4*x 
$$x^{3} - 4 x^{2} - 9 x - 36$$
-36 + x^3 - 9*x - 4*x^2
Combinatorics [src]
       3            2
-36 + x  - 9*x - 4*x 
$$x^{3} - 4 x^{2} - 9 x - 36$$
-36 + x^3 - 9*x - 4*x^2
Combining rational expressions [src]
-36 + x*(-9 + x*(-4 + x))
$$x \left(x \left(x - 4\right) - 9\right) - 36$$
-36 + x*(-9 + x*(-4 + x))
Trigonometric part [src]
       3            2
-36 + x  - 9*x - 4*x 
$$x^{3} - 4 x^{2} - 9 x - 36$$
-36 + x^3 - 9*x - 4*x^2
Powers [src]
       3            2
-36 + x  - 9*x - 4*x 
$$x^{3} - 4 x^{2} - 9 x - 36$$
-36 + x^3 - 9*x - 4*x^2
Common denominator [src]
       3            2
-36 + x  - 9*x - 4*x 
$$x^{3} - 4 x^{2} - 9 x - 36$$
-36 + x^3 - 9*x - 4*x^2
Rational denominator [src]
       3            2
-36 + x  - 9*x - 4*x 
$$x^{3} - 4 x^{2} - 9 x - 36$$
-36 + x^3 - 9*x - 4*x^2
Assemble expression [src]
       3            2
-36 + x  - 9*x - 4*x 
$$x^{3} - 4 x^{2} - 9 x - 36$$
-36 + x^3 - 9*x - 4*x^2
Numerical answer [src]
-36.0 + x^3 - 4.0*x^2 - 9.0*x
-36.0 + x^3 - 4.0*x^2 - 9.0*x