$\int-9\cos\left(x\right)sen\left(x\right)dx$

$cos\:x=\frac{1}{\sqrt{2}}$

$\left(2x-y^5\right)^2$

$12x^3+24x^2-12x-24$

$\frac{d}{dx}ln\left(\frac{x^{\frac{5}{4}cosx}}{2x^2+8x+6}\right)$

$\frac{dy}{dx}\left(\frac{5-2xy}{x^2}\right)$

$7-\left|5-8\right|-\left(4-12+6-11\right)$