$\left(\frac{x^{4a}}{5}+\frac{\left(b^4x\:y^{\left(a+1\right)}\right)}{4}\right)^2$

$\frac{d}{dx}\sqrt[a]{\frac{x^2+2}{x^2-2}}$

$\cot\left(25\right)\cos\left(65\right)\csc\left(65\right)$

$sen\:x\:\left(2sec^4x\:+3sec^2x\right)$

$\frac{y^2+y-2}{y+2}$

$x^5-4x^4$

$\int\:\frac{\left(4x^2\right)}{\sqrt{36-x^2}}dx$