$\left(x^2-x^4\right).\left(2-x^2\right)$

$\frac{d}{dx}\left(\left(x^4+1\right)^3\left(x-1\right)^4x^5\right)$

$\left(3ca+bx\right)^3$

$-845+1393-6549$

$\frac{1-\text{sen}^2x}{\cos x}\equiv\sec x+\cos x$

$\frac{1}{3}\cdot\left(-2\cdot32\right)^{-\frac{2}{3}}$

$77\le5+8n$