$\log\left(2+x\right)-\log\left(x-3\right)=\log\left(2\right)$

$2x^2-16x=50$

$\left(5x+8\right)\left(5x-5\right)$

$4xy+2x^2y$

$\left(y+\frac{2}{y}\right)^4$

$\frac{\csc^2-1}{\cot\csc}$

$-\frac{1}{4}\left(-\frac{1}{2}x\:-\:\frac{3}{4}\right)\:-\:\frac{1}{2}\:\left(\frac{3}{4}x\:+\:\frac{1}{8}\right)$