$\left(3x^3-2m\right)^2$

$\frac{2cos}{\left(1+cos\left(x\right)\right)\left(1-cos\left(x\right)\right)}$

$x\sqrt{2a}.\frac{1}{2}\sqrt{5a}$

$2x-3+2x+3$

$\frac{\tan\left(2\pi\right)-\tan\left(x\right)}{1+\tan\left(2\pi\right)\tan\left(x\right)}$

$\frac{dy}{dx}=\frac{-x}{\sqrt{x^2+9}}$

$x^2dy+\left(2xy-e^x\right)dx=0$