$sin\left(\frac{x}{2}\right)=-1$

$\left(x^5+9\right)^2$

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

$4x^2-2x+0.25$

$\frac{1}{3}\left(x-2\right)+\frac{1}{4}\left(x-1\right)+\frac{1}{6}\left(x+1\right)>\frac{1}{2}\left(11-x\right)$

$\int\frac{2s+5}{s^2+6s+34}ds$

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