$\left(1-8x\right)\left(-1-8x\right)$

$\int\frac{\sqrt{4-x^2}}{5x^2}dx$

$\int_0^{\frac{5\sqrt{2}}{2}}\left(\frac{11x^2}{\sqrt{\left(25-x^2\right)^3}}\right)dx$

$\left(6^{-3}\right)^{-1}$

$\frac{2}{x}\le1$

$\frac{\left(s+1\right)}{s^2-4s}$

$\lim_{x\to\infty}\left(\frac{\sqrt{4+10x^2}}{\left(3+10x\right)}\right)$