$\left(30x^9+8y^2\right)^4$

$\left(4a^2b\right)\left(5ab^2\right)$

$\left(-r^{\frac{1}{3}}\right)^{-6}$

$\lim_{x\to0}\frac{\left(\sin\left(x\right)^2\right)-ln\left(1+x^2\right)}{1-cos\left(x^2\right)}$

$\frac{d}{dx}\frac{-16\left(6+\frac{4}{x}\right)^3}{x^2}\:\:$

$2a^2+4ab+5ab-10b^2$