$6x^2\:-\:6x\:-\:120$

$m-n+y;m=-2\:;\:n=7y=3$

$\frac{dy}{dx}=\frac{1+3x^2}{3y^2-6y}$

$\left(3xy^3+9z^2\right)^2$

$\left(s+1\right)^3\left(s^3\right)$

$8\left(\frac{1}{2}y+\frac{3}{4}\right)$

$\left[\left(a+b\right)^{\left(2\right)}+\left(a-b\right)^{\left(2\right)}\left(a+b\right)^{\left(2\right)}-\left(a-b\right)^{\left(2\right)}\right]$