$\int-sen\left(5x\right)\cdot sen\left(cos\left(5x\right)\right)dx$

$\left(x+2\right)\left(x-\frac{1}{2}\right)$

$\int\frac{x}{\sqrt{2-2x-x^2}}dx$

$cos\left(x\right)+\tan\left(x\right)=csc\left(x\right)sec\left(x\right)$

$5x^3\left(4-9x^4\right)$

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

$3x^2-5x^2+52x+12$