$\lim_{x\to+\infty}e^{\frac{5}{x-1}}$

$\:x\:-\:21\:>\:85$

$-9\left(\cos^2\left(x\right)\right)+\sin\left(x\right)+11=-\sin\left(x\right)+2$

$2.725-0.7$

$49a^4b^2\cdot5a^3b^3$

$\int_0^{\infty}\left(\frac{1}{8}xe^{-\frac{\left(x+y\right)}{2}}\right)dy$

$2x^2-\sqrt[2]{72x}+9$