$36y^2-16y^2$

$3-\left(-18\right)-5$

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

$-\left|-\frac{1}{2}\right|and\:-\left|\frac{1}{5}\right|$

$\frac{5}{10}\cdot\frac{1}{-5}+\frac{1}{10}$

$\frac{1}{csc\:x-cot\:x}=csc\:x+cot\:x$

$\int_2^3\left(3x\left(4x+4\right)\right)dx$