$\frac{dy}{dx}=40y+x$

$\lim_{x\to\infty}\left(\frac{n^3}{8^n}\right)$

$\frac{3}{4}a^2b-\frac{2}{3}ab^2+\frac{1}{2}a^2b-\frac{1}{5}ab^2$

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

$\frac{dy}{dx}+\frac{4y}{x}=\frac{x^3-1}{x}$

$y^2-15=-56$

$\int\:\left(4w\:-\:1\right)^3\:dw$