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

$\int\:x\:arc\:\sec\left(2x^2\right)dx$

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

$8x-7=33$

$-2.22+11.11-\left(-0.8\right)$

$\lim_{x\to0}\left(\frac{tan2x-2\cos\left(x\right)}{x^3}\right)$