$\frac{2x^5y^3z^3}{8x^3y^7z}$

$x^2+6.5\cdot10^{-2}-6.5\cdot10^{-3}$

$\sqrt{\left(\frac{a^5}{b^3}\right)^{-1}}$

$80\left(log\left(10^2^x\right)+in\left(e^2^x\right)^1\right)=320$

$\left(m^2-n\right)^3$

$\lim_{x\to3}\left(\frac{x^2-x-6}{\sqrt{3x+4}-\sqrt{5x-2}}\right)$

$5a\:-\:3b\:+\:c\:-\:12a\:+\:13c\:-\:7b\:-\:5c\:+\:4b\:-\:3c\:-b\:+\:9b$