$-2\sqrt{10}-7\sqrt{10}$

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

$\frac{22m^xn^y}{11mn}$

$\pi\int_0^1\left(xe^x\right)dx$

$\lim_{x\to\infty}\left(4+\frac{2}{x^2}\right)$

$\int\frac{5\cos\left(x\right)^2}{\sin\left(x\right)}dx$

$\frac{d}{dx}\left(\frac{\left(x-y\right)}{2}\right)$