$\sqrt{\left(\frac{-kq}{\frac{\sqrt{2a}}{2}}\right)^2+\left(\frac{-kq}{\frac{\sqrt{2a}}{2}}\right)^2}$

$\left(2x+9\right)^3$

$36x^{10}y^2-81x^8y^4$

$\lim_{x\to\infty}\left(\frac{x-1}{\sqrt{x^2-1}}\right)$

$\lim_{x\to3}\left(\frac{\left(x\right)-3}{x+1}\right)$

$\int\frac{5}{\left(3+12x^2\right)}dx$

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