$\int_{-\infty}^4\left(\frac{2x}{x^2-1}\right)dx$

$4\cdot\left(6+4\right)-7+3$

$4x^4-20^3+51^2-57x+18$

$\frac{dy}{dt}sin\left(t\right)cos\left(t\right)=y+sin^3t$

$\frac{d}{dx}\left(\arcsin\left(\frac{1}{5}\right)\right)$

$\left(\frac{1}{9}a-\frac{3}{4}b\right)^2$

$\int_1^2\left(\frac{4x^2+2x+8}{x\left(x^2+2\right)^2}\right)dx$