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

$2x^{\frac{-1}{3}}$

$\frac{1+csc\left(-\theta\right)}{csc\left(-\theta\right)}$

$\csc\left(\frac{\pi}{2}\right)-u$

$2x^3\:-\:x^2\:-\:50x\:+25$

$-5+y^2+3y^2+6+1-6y^3+2y^3$

$\left(2b+c^{x+2}\right)^2$