$\lim_{x\to0}\left(\sin\left(x\right)^2\right)$

$\frac{d}{dx}\left(\frac{\log\left(x\right)}{7+\log\left(x\right)}\right)$

$\left(5x-2\right)^2\cdot\left(4x+4\right)^2$

$-m^2n+6m^3n$

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

$\frac{29x-56}{3x-7\:2x-3}$

$f\left(x\right)=\left(x+2\right)^4\left(5x-2\right)^3$