$\lim_{x\to1}\left(\frac{6x-6}{ln\:x^2}\right)$

$\int\frac{1}{\left(25x^2+16\right)^2}dx$

$\left(\frac{1}{2}x^3-\frac{1}{3}y^4\right)^3$

$6x^2-18x+5=0$

$5\sqrt{2}\cdot6\sqrt{2}$

$4x^2-18x-70=0$

$\left(\frac{4}{5}xy^2-\frac{7}{8}z^3\right)\left(\frac{4}{5}xy^2+\frac{7}{8}z^3\right)$