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

$\left(6x^2\cdot2v\right)^3$

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

$\sqrt[3]{x^2}+16x^{\frac{1}{4}}-2x+4$

$\lim_{x\to-2}\left(x^2+2f-1\right)$

$5\cdot40$

$\lim_{x\to\infty}\left(\sqrt{x^2+x+1}^2-x\right)$