$\lim_{x\to0}\left(1-\sin\left(\frac{x}{2}\right)\right)$

$3x^2+1\le0$

$2\log_{12}\left(2\right)+\log_{12}\left(3\right)$

$ln\left(\frac{5x^2\left(\sqrt{1-x}\right)^3}{6\left(x+1\right)^5}\right)$

$\int4x^3\cdot e^{\left(-x^2\right)}$

$y=3x^2+4x+2$

$x^{3\:}-13x^2+36x$