$a^3+a+2a^2-\frac{1}{a-1}$

$csc+cos\left(x\right)cot\left(-x\right)$

$4+\sqrt{h+1}=14$

$3^{16}$

$\left(\frac{2}{3}m^3+\frac{1}{2}m^2n-\frac{5}{6}mn^2-\frac{1}{9}n^3\right)\left(\frac{3}{4}m^2n^3\right)$

$\left(49x^2yz-100xy+2\right)^2$

$\left(1+e^y\right)y\cdot\frac{dy}{dx}=e^y$