$\left(4b^2c-2bc\right)^2$

$\lim_{x\to0}\left(3x^2+2x+5\right)$

$\left(c+d\right)^2-18\left(c+d\right)+65$

$\frac{d^3y}{dx^3}y=\left(-\frac{1}{4}x^{-4}+\frac{2}{3}x^6+\frac{5}{16}x\right)$

$\frac{d^2x}{dt^2}\left(5\cdot\left(-q\frac{dx}{dt}-kx+p\right)\right)$

$6n-2$

$\lim_{x\to2}\left(\frac{x^2-4}{4x^2+5x-6}\right)$