$3x^2+6x+1$

$\frac{dy}{dx}=\frac{6-x^2}{2y^3}$

$\lim_{t\to-4}\left(\frac{t^2-5t+44}{t^2-t-20}\right)$

$\int\sin\left(3x+5\right)dx$

$\int\frac{29}{\left(x+2\right)\left(x^2+4x+10\right)}dx$

$\lim_{x\to0}\left(\left(1+5x\right)^{\frac{2}{x}}\right)$

$7-\frac{5x-6}{10}=\frac{91}{10}$