$\sqrt{50a^2}b$

$\frac{\left(x^3+2x^2+6x-1\right)}{\left(x+2\right)}$

$\left(a^3\:_{-4a^2}+6a\right)\left(-ab\right)$

$3y=\frac{dy}{dx}-6x^3$

$f\left(x\right)=in\left(t^2\left(3t^2+6\right)\right)$

$\int\left(\frac{x^2}{\left(8\:-\:x^3\right)^2}\right)dx$

$\left(10y-5\right)\left(10y-5\right)$