$\left(5x^5-2x^3+3x^2-2x+1\right)\cdot\left(x-2\right)$

$\frac{1}{2}\int\sec^3dx$

$3^{-x^2}\left(y^2-1\right)\left(\frac{dy}{dx}\right)=-xy$

$\frac{d}{dx}\left(x^x\right)x\sqrt{x+2}$

$\int\frac{x}{\sqrt{x^2+8x+25}}dx$

$\frac{dy}{dt}=1-t+y^2-ty^2$

$\left(-4\right).11-\left(-3\right).8$