$x^2-20+20+\frac{x}{x}+5$

$\int\left(\frac{x^3}{\sqrt{x^2-2}}\right)dx$

$\left(-6a^2+3a+7\right)+\left(8a^2-7a+5\right)$

$-7y^3\left(x+2x^2y^2-4y^5\right)$

$\frac{d^3}{dx^3}\left(6x+4\right)^3$

$\int\left(\frac{1}{y\ln\left(y\right)}\right)dx$

$\int\:\frac{1}{e^x}dx$