$2x^2-11x-40$

$\lim_{x\to\infty}\left(\frac{7x^3}{x^3-3x^2+6x}\right)$

$\frac{y\sqrt{3}-2}{2\sqrt{3}+2}$

$\left(\sqrt[2]{x+1}-\sqrt[2]{x}\right)\left(\sqrt[2]{x+1}+\sqrt[2]{x}\right)$

$\frac{x}{1-\frac{x^8}{6}}$

$\int_o^{\pi}\left(\log\sin\left(x\right)\right)dx$

$\frac{dy}{dx}\left(x^2+6xy+y^2\:\right)$