$16x\:+\:3x^2-8x-3x+x^2$

$\left(x^3\cdot x^2\cdot x\right)\left(y\right)\left(5\cdot3\cdot2\right)$

$\int\frac{3x-3}{x^2-2x-15}dx$

$\log\left(x+4\right)-\log\left(17\right)=\log\left(11\right)$

$0\:-\:\left(-53\right)$

$64x\left(2\right)-48xy+9y\left(2\right)$

$\frac{tanx}{-tan^2x}$