$55\:m^2n^2x+110m^2n^3x^2-220m^2y^3$

$\int_0^{\infty}\left(e^{-x}sin\left(\pi e^{-x}\right)\right)dx$

$\frac{x^2-14x+48}{x-8}$

$\lim_{x\to0}x^{7sin\left(x\right)}$

$15\cos^2\left(x\right)+7\cos\left(x\right)-2=0$

$\lim_{x\to0}\left(\frac{\sqrt{x+16}-4}{y}\right)$