$10y^2+y-2$

$\int220\sec^2\left(x\right)dx$

$t^2\:+\:20r\:+\:5r$

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

$\int\left(\frac{x^5}{\sqrt[2]{x^2-1}}\right)dx$

$\lim_{x\to0}\left(\frac{e^{5x}-e^{-5x}-10}{x-\sin\left(x\right)}\right)$

$\frac{d^2}{dx^2}\left(\frac{1}{y}\right)$