$\frac{4}{\left(5a\right)^3}$

$\lim_{x\to\pi}\left(\frac{1+\cos\left(2\right)x}{1-\sin\left(x\right)}\right)$

$\cos\left(x\right)^2+2\sin\left(x\right)=0$

$\frac{dy}{dx}=\frac{\left(y+1\right)\left(x+3\right)}{\left(y+2\right)\left(x-1\right)}$

$\int\:x^{\frac{3}{2}}\cdot in\left(x\right)$

$\left(9v\:+2z\right)\cdot\left(9v-2z\right)$

$\left(9x\right)^{\frac{1}{2}}\:.\:\left(4x^{\frac{1}{4}}\right)$