$\left(z+3\right)\left(z+5\right)=z^2+8z+15$

$\sqrt{x}.\frac{dy}{dx}=\frac{e^{\sqrt{x}}}{e^y}$

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

$x+5=x+3$

$\int\:\frac{5}{9}csc\frac{x}{5}cot\frac{x}{5}dx$

$\frac{1}{3}\left(2x\right)^2+2\left(2x\right)\left(3y\right)+\left(3y\right)^2\left(2x\right)$

$4x^2+12x=10$