$\sin x\left(2\sin\left(x\right)+1\right)$

$\left(\left(\left(-13^2\left(-13^9\right)^4\right)^{\frac{1}{5}}\right)^{\frac{1}{2}}\right)^{\frac{1}{3}}$

$\left(-\:40\:+\:5\right)\::\:\left(-\:7\right)\:$

$\int_0^{\infty}\left(\frac{x^3}{\left(x^2+1\right)}\right)dx$

$-4\cdot\left(-6\right)\cdot4$

$\frac { n } { n }$

$\:\left(\frac{1}{8}z^2+\frac{1}{3}y^3\right)\left(\:\frac{1}{8}z^2-\frac{1}{3}y^3\:\right)$