$\left(u+6\right)\left(3u+2\right)$

$\left|-3\right|\cdot\left|5\right|$

$14cot\left(x\right)-14=9cot\left(x\right)-19$

$\frac{6}{3}+\frac{\left(-5\right)}{3}+\frac{2}{3}$

$\lim_{x\to\infty}\left(\frac{e^x-1}{ln\left(e^x+1\right)}\right)$

$6z^3\left(z^3+y\right)-\left(6z^3-y\right)^2$

$\sqrt[32]{1+80\left(3^4+1\right)\left(3^8+1\right)\left(3^{16}+1\right)}$