$8x-16$

$3x\:\:>\:\:-\:\:12$

$\left(5x-1\right)^2-\left(3x+1\right)^2$

$\frac{d}{dx}\left[\left(sinx\right)\left(sin2x\right)\left(cosx\right)\left(sec^2x\right)\right]=2sin2x$

$\frac{x^5+3x+2x^2-7}{x^2-3x-1}$

$\int \frac { 4 x d x } { \sqrt { 4 - x ^ { 2 } } }$

$c ( - 3 x ^ { 2 } - 5 ) \cdot ( 3 x ^ { 2 } + 5 )$