$13-\left(x+5\right)=4x-\left(6x-5\right)$

$t^6+5\:t^6-9$

$\lim_{x\to0}\:\left(e^{-x}-1-\frac{x^2}{2}\right)$

$x^5e^x^2$

$\int\left(4-2m^2\right)^7mdm$

$\log_{16}\left(w\right)-\log_{16}\left(8\right)=2$

$\left(\frac{3}{2}x^{-4}y^{\frac{2}{3}}-\frac{1}{4}x^{\frac{2}{5}}z^{-7}\right)^3$