$2\left(n-1\right)+1$

$2x+1\sqrt{2x^3}+7x^2+5x+1$

$93z^2m^2y-62z^2m^3y$

$\int x-\left(\frac{1}{\left(3x\right)^2}\right)dx$

$-3m^2n;m\:=2yn\:=-3$

$\frac{d}{dx}-4x^6+15x^3+12$

$\left(-12\right)\:-\:\left(+15\right)\:-\left(-23\right)-\left[-\left(+6\right)-\left(-18\right)+\:\left(-13\right)\:\right]$