$\left(x^28xy-5y^2\right)$

$\sqrt[4]{16x^{14}y^{18}}$

$\lim_{x\to\pi}\left(\frac{\csc\left(x\right)}{1+\cot\left(x\right)}\right)$

$\lim_{x\to a}\left(\frac{1-cosx^2}{x^2senx^2}\right)$

$5x^{3a}-10x^{a+2}+20x^{2a}$

$\left(-8\right)+\left(-10\right)-\left(5\right)-\left(-12\right)$

$\frac{dy}{dx}=\left(x+y+3\right)^2$