$\frac{1}{1+x}>-1$

$\frac{dy}{dx}=2x+5y-3$

$\int\sqrt{4-y^2}dx$

$m=5\left(9m-3n+b\right)$

$\lim_{x\to\infty}\left(\frac{ln\left(8x+7\right)}{ln\left(9x+10\right)+4}\right)$

$\left(\frac{\left(_{-1+\sqrt{3}}\right)}{2}\right)^4+\left(\frac{\left(_{-1-\sqrt{3}}\right)}{2}\right)^4$

$\int\left(\tan\left(x\right)\cdot\sec\left(x\right)^4\right)dx$