$\left(2x^2+6x+2\right)+\left(10x^2-14x-8\right)$

$\int\frac{-3}{\sqrt[3]{x}}-4\sqrt{x}dx$

$\frac{144x^2-36y^2}{16x-6y}$

$\left(1-\frac{2}{9}xy^3\right)^3$

$\frac{dy}{dx}=\frac{x^2}{4y^2}$

$\cot\left(x\right)^2.\sec\left(x\right).\sin\left(x\right)$

$\lim_{x\to0}\left(\frac{x^4-3x+12}{x^5+6x^2+3}\right)$