$x^2+2x+5\le0$

$\int\left(\frac{x^3+2}{x^3-x}\right)dx$

$\sin\left(\frac{\sqrt{23}}{12}\right)^2+\cos\left(x\right)^2=\tan\left(\frac{\sqrt{23}}{11}\right)^2$

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

$\frac{dy}{dx}=y\left(2\right)$

$144\::\:4$

$\lim_{x\to0}\left(cos\left(x\right)+sin\left(x\right)\right)$