$\left(-4a^2b^3\right)\left(-3ab^3\right)$

$\frac{dy}{dx}=\frac{x}{\sqrt{y}}$

$\:y-\:\left(x-\:y\right);\:use\:x\:=\:-1,\:and\:y\:=\:$

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

$\sqrt{a+b-2\sqrt{ab}}$

$\left(2+a\right)^3\left(2+a\right)^{\frac{1}{4}}\left(2+a\right)^{\frac{3}{2}}$

$1^{14}$