$\left(5x^2+7y^3\right)^3$

$\frac{dy}{dx}=\left(\frac{2xy}{\left(x^2-y^2\right)}\right)$

$\lim_{x\to\infty}\left(1+\frac{4}{n}\right)^n$

$2a+3b\:+1-b\:+a+b-c$

$\frac{\left(4\cdot\:27\cdot\:5\right)^2}{54^2\cdot\left(2\cdot5\right)^2}$

$\frac{cos2\left(x\right)}{1-\sin\left(x\right)}=1\:+\:sin\left(x\right)$

$2x^3-2x$