$-3.8-2.2$

$7\sqrt[3]{b^2}\cdot5\sqrt[5]{b^7}$

$\lim_{x\to\infty}\left(\left(x^{\frac{1}{3x}}-x\right)\cdot a\right)$

$\int\frac{-4x+6}{x^2-2x+3}dx$

$\frac{dy}{dx}+3x^2y=9x^2$

$\int\frac{2x^4-2}{x^2\left(x^2-1\right)}dx$

$\frac{dy}{dx}=tan\left(x\right)sec\left(x\right)$