$\frac{dy}{dx}=x^3\left(9-x^2\right)$

$-5b-7b+10b$

$\frac{d}{dx}\left(x\:ln\left(x\right)-1\right)$

$\left(2x+1\right)y'+y=\left(1+2x\right)^{\frac{3}{2}}$

$\left(x^2\left(x\left(x^{\frac{3}{2}}\right)\right)^{\frac{1}{12}}\right)^{\frac{1}{3}}$

$13x\:-\:5\:=\:-5\:+\:13x$

$x-12=42$