$xy^{2}\frac{dy}{dx}=y^{3}-x^{3},\quady\left(1\right)=2$

$r^2+r-2$

$\left(-10x^2+x\right)+\left(-2x^2+9x+7\right)$

$\lim_{x\to\infty}\left(\frac{e^x-1-x}{1-cosx}\right)$

$\left(2.23606797749979+1.4142135623730951\right)^2-2\left(\sqrt{10}-4\right)$

$\left(2x+1\right)^2\left(2x+1\right)$

$\sqrt{225}+\sqrt{196}-\sqrt{169}$