$\frac{-2x^2-2x}{x+3}$

$\left(-10\right)^{10}\cdot\left(-10\right)^4\left(-10\right)^2$

$\int_1^3\left(\frac{2}{\left(x-1\right)^2}\right)dx$

$3^2-6\cdot3-5$

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

$\left(-5xa^2b\right)\left(3a^4b^2\right)$

$\lim_{x\to0}\left(\frac{ln\left(b\right)}{x}\right)$