$4a^2-8a^2b+4a^2c$

$\frac{6x^3+24x^2+18x-12}{x+3}$

$\int\frac{1}{x^4-x^3-x^2-2x}dx$

$\lim_{x\to\infty}\left(\sqrt{x^2-1}\right)$

$\lim_{x\to\infty}\left(\frac{ln\left(5x+7\right)}{ln\left(3x+5\right)+8}\right)$

$\frac{6h}{2h^{-2}}$

$4\left(9\right)^2+3\left(9\right)-3$