$\left(-3x^{3}+8x^{2}+20x-14\right):\left(x-4\right)$

$9y^2-21y-8$

$2-2\sin\left(x\right)^2+2\cos\left(x\right)=0$

$4x^2+16^3$

$\left(4m^{3}n^{3}-5n^{6}+7\right)\left(6m^{3}n^{3}+9m^{6}+8\right)$

$\int\left(raiz\:x\:+1\right)\left(x-raiz\:x\:+1\right)\:dx$

$\int3x\left(5x^2+8\right)dx$