$\left(10^2-4\right)\left(10+2\right)$

$\frac{16}{9}x^2+\frac{8}{3}xy+4y^2$

$x^4-8x^2-240$

$\lim_{x\to\infty}\left(\frac{-xe^{b-ax}}{a}\right)$

$\int\left(\frac{5x^4}{\sqrt{16-x^{10}}}\right)dx$

$\left(\frac{9}{8}+\frac{a}{x^2}\right)^2$

$\frac{4x-8}{12x^3-8x^2-60x+56}$