$\left(-\frac{1}{2}\left(-\frac{51}{571}-\frac{311}{250}\right)-\frac{2}{3}\right)+\left(\frac{\sqrt{3}}{2}\left(-\frac{51}{571}+\frac{311}{250}\right)\right)i$

$3x^3+6x^2-12x$

$\int2xe^{9x}dx$

$\left(\left(a+1\right)-b\right)^3$

$9x+3=3\left(3x+1\right)$

$\cos\left(x\right)\left(\cos\left(x\right)+\tan^2\left(x\right)\cos\left(x\right)\right)$

$a^22ab+b^2$