$( 6 x ^ { 2 } - m ^ { 2 } x ) ^ { 2 }$

$a^3b-3ab+2b=0$

$\left(a-\frac{7b}{2}\right)\left(a-\frac{5b}{2}\right)$

$f\left(x\right)=6x^3-2x^2+2x-4$

$\lim_{x\to z}\left(\frac{\left(\arctan\left(z\right)-\arctan\left(x\right)\right)}{z-x}\right)$

$\left(\frac{-9\:^3\sqrt{x^2}}{\sqrt{x}}\right)^2$

$\int\frac{1}{\left(2-x\right)\left(4+x\right)^2}dx$