$2\left(x+y\right)^2+3\left(x-y\right)^2$

$\lim_{x\to0}\left(\frac{x^3-8}{x^2-4}\right)$

$\frac{1}{4}x^{\frac{1}{2}}-\frac{4}{9}^2$

$\lim_{x\to2}\sqrt{6x^3-7x^2-3x}$

$\:\left(4p\:-\:5q\right)\left(4p\:+\:5q\right)$

$\int\frac{5x^4+x^2-2}{x^3+8}dx$

$\frac{3c^2}{4}+\frac{4n^2}{m}$