$\int\left(x^2+2x+3\right)\cdot\left(2x+2\right)dx$

$\int_{10}^{\infty}x\cdot e^{-x^2}dx$

$\frac{\frac{1}{x^2+1}-\frac{1}{a^2+1}}{x-9}$

$\sin x\tan x=\frac{1-\cos^2x}{\cos x}$

$\sqrt{36x^{4}y^{10}}$

$0x^2+3xy^2-2xyz^2-3xy^2z+xyz^2$

$\left(\frac{7.00}{6.00}\right)-1.100$