$\left(3x^2+4x+6\right)^3$

$2x^2+x^2+4x+2$

$\lim_{x\to1}\left(\frac{x^3-2x^2-5x+6}{x^3-1}\right)$

$e^{x-1}-5=y$

$\int\frac{x-7}{\left(x^2-10x-13\right)}dx$

$\frac{4\:\sec\left(e\right)}{3}+1$

$\frac{d}{dx}\left(x\cdot\left(x+2\right)\cdot\left(\sqrt[3]{x^2-9}\right)\right)$