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

$( 3 m + 6 g ) ^ { 2 }$

$2\sqrt{5}\:+\:4\sqrt{5}\:-\:\sqrt{5}+\:3\sqrt{5}$

$\lim_{x\to0}\left(\frac{cos\left(x\right)-1+\left(\frac{x^2}{2}\right)}{5x^4}\right)$

$\frac{\left(2x^4\right)^2}{\left(5y^2\right)^3}$

$a^2+4a+2$

$\int x\left(5x^2-2\right)^4dx$