$2-\left|4\right|-\left|6\right|$

$\frac{dy}{dx}\left(\sqrt{1-y^2}\right)$

$-3x+3>-2x+1$

$\frac{d}{dx}x^3\sqrt{y}+y=42$

$\int\left(\frac{\left(x+1\right)}{\left(x^2+2x-3\right)^2}\right)dx$

$\int_0^1\left(\frac{x-2}{\sqrt{4-2x^2}}\right)dx$

$\frac{8}{y+6}-\frac{5}{y+6}$