$\lim_{x\to-1}\left(\frac{\ln\left(2+x\right)}{x+1}\right)$

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

$\int\frac{26x+4}{\left(5x+1\right)\left(x-1\right)}dx$

$-2a-3cd$

$p^2-2p-7=0$

$\left(x^6-49y^6\right)\:\:\left(x^3+7y^3\:\:\right)$

$f\left(x\right)=15\left(3x^3+2x^2+5\right)$