$\left(x+y+x^2\right)^3$

$2\left(\frac{1}{5}a^2b\right)\cdot\left(5ab^2\right)$

$2\sin\left(x\right)^2-1+4\sin\left(x\right)^2\cos\left(x\right)^2$

$6r\left(r-1\right)\left(r-2\right)$

$\frac{9x^4}{16}+\frac{1}{2}-\frac{1}{9x^4}$

$-8\left(5g+3\right)$

$\frac{d}{dx}\sqrt{2x\:}+\sqrt[3]{3x}$