$\int_0^{10}x^2e^{-\frac{x}{4}}dx$

$\frac{1}{25}+\frac{25x^2}{36}-\frac{x}{3}$

$\left(x^3+x^2+1\right)\left(x-1\right)\left(x+5\right)$

$\lim_{x\to3}\left(\frac{x^2-2x-3}{x^2-4x+3}\right)$

$\lim_{x\to\infty}\left(\frac{x^2+10x+100}{x^2+20x+100}\right)$

$f\left(x\right)=\sqrt{5x}$

$\frac{1}{\sqrt{1-\frac{v^2}{c^2}}}$