$\left(4x-9\right)\left(3x+11\right)$

$-\frac{x}{4}+\frac{x}{12}\le5\:+\:\frac{x}{4}$

$3+2x\:\frac{1}{3}-x^2$

$\lim_{x\to1}\left(\frac{-2x^3-14x^2-14x+30}{x^3+4x^2-x-4}\right)$

$\left(\frac{2}{\:3}y-\frac{9}{5}x\right)^2$

$2-\int e^{-x}\cdot\:\left(2x+1\right)dx$

$\lim_{x\to1}\left(\frac{3x-1}{x+1}\right)^{\frac{1}{2x-2}}$