$-n^2\left(n^2-5n+6\right)$

$\left(a^3-5x^2\right)^2$

$\frac{2}{3}x^{3}-\sqrt{18}\right)\left(\frac{2}{3}x^{3}+\sqrt{72}\right)$

$2y=x$

$\int\:_{\:cos\left(t\right)}^{\left(t+1\right)}\:tan\:\left(3s\right)ds$

$\left(x^4-9\right)\cdot\left(x^4+9\right)$

$6x^2y^3-32x^3y^3+48x^2y$