$\lim_{x\to4}\left(\frac{\sqrt[3]{3x+31}}{x^2+2x-24}\right)$

$\sqrt{8\cdot a^2\cdot4\cdot b^2}$

$1-2\sin^2\left(3x\right)-\sin^2\left(6x\right)$

$\int\frac{2x-5}{x^2-5x+6}dx$

$\lim_{x\to\infty}\left(\frac{1}{ln}\right)$

$\frac{m^2-11m-30}{m-6}$

$\int\frac{-12+5x}{x^2-5x+6}dx$