$\lim_{x\to2}\left(\frac{x^2+4x-12}{x^2-2x}\right)$

$2x^2-\sqrt[2]{72x}+9$

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

$\frac{d}{dx}\sqrt{x^4+y^4}=2xy$

$\lim_{x\to\infty}\left(\frac{5x^2+x-3}{x^2+2x-1}\right)$

$\left(x+3\right)\cdot e^{2x}$

$\left(3x^5y^6\right)\left(4x^3y^{-4}\right)$