$25p^3-2p^2-4p^3+8p^2-9+p$

$\left|\left(a+2b\right)+\left(5c+2\right)\right|\left|\left(a+2b\right)-\left(5c+2\right)\right|$

$\left(2x+4\right)dx-\left(3y-1\right)dy=0$

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

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

$\int\frac{\sqrt{x^2+16}}{3x^2}dx$

$\left(36m^4-49n^2\right)$