$\left(y-yx^2\right)\frac{dy}{dx}=\left(y^2+1\right)$

$\lim_{x\to\infty}\left(\frac{\sqrt[2]{1+16x^6}}{3-x^3}\right)$

$\frac{169m^4-25}{13m^2-5}$

$\int\frac{2}{x\sqrt{x^2+25}}dx$

$\left(2x^2+3x-1\right)^2$

$\frac{1}{2}\left(3x^2-4+\frac{5}{2}x\right)\frac{-3}{4}\left(x-2\right)+\frac{5}{3}$

$\frac{d}{dx}3x^4+x^2$