$\left(3x+1\right)\frac{dy}{dx}=y+2$

$\lim\:_{x\to\:\infty\:}\left(\frac{3sinx}{2x^2}\right)$

$7x-8y\sqrt{x^2+1}\left(\frac{dy}{dx}\right)=0$

$-4\left(2\right)\left(-27\right)$

$\left(\frac{5x^{-3}y^{-6}z^2}{4x^{-2}y^2z^{-4}}\right)$

$\left(b+7\right)^2$

$m=\ln\left(n^2+2n\right)$