$\frac{3x^4-3x^2+3x+12}{x+1}$

$\int25dy$

$\frac{dy}{dx}\left(\sqrt[3]{\frac{3y^2}{2}}\right)$

$\lim_{x\to1}\left(\frac{2x-2-2ln\left(x\right)}{ln\left(x\right)\left(x-1\right)}\right)$

$\left(1+d\right)\left(1-d\right)$

$\int\frac{9x}{x^4-10x^2+9}dx$