$\int\frac{\left(1-x\right)}{\left(x+2\right)^2}dx$

$5\left(10a+1\right)+2\left(2+8a\right)$

$2a^2-4ab+5ab-10b^2$

$25p^3-2p^2+5p^3-2$

$\lim_{x\to\infty}\left(\frac{6x^2+5x}{\left(1-x\right)\left(2x-3\right)}\right)$

$12x\left(6x-2\right)+3\left(5x-2\right)$

$x^3\left(x^6+1\right)$