$\lim_{u\to8}\left(\frac{u^2-5u-24}{h}\right)$

$y'+\frac{y}{x}=xy^2$

$\lim_{x\to0}\left(\frac{x}{\sqrt{x+9}-3}\right)$

$\int\left(\ln a\right)^2da$

$\left(4m^5\right)^2-2\left(4m^5\right)\left(5n^6\right)+\left(-5n^6\right)^2$

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

$\lim\:_{x\to\:-1}\left(\frac{x^2+x}{1-\sqrt{2x+3}}\right)$