$\left(a-3x^2\right)\left(a+3x^2\right)$

$\left(x^{-2}\right)\left(5x-2x^{\frac{1}{3}}\right)$

$\left(x^2+3x\right)\left(x^2+1\right)$

$\int\frac{11}{\left(x^2+1\right)^{\frac{3}{2}}}dx$

$\lim_{x\to0}\left(e^x-1+x\right)^{\frac{2}{x}}$

$24x^2-22x+5$

$\int\:\left(x^3-10x+8\right)^3\left(3x^2-10\right)dx$