$\lim_{x\to-2}\left(\frac{ln\left(2-x\right)}{\sqrt{4-x^2}}\right)$

$\int5\left(\tan^2\left(x\right)\right)dx$

$sin\left(2x\right)\left(cos\left(x\right)-1\right)=0$

$\frac{am^5-am-2a}{am+a}$

$2x^2+9x+10=0$

$\int\frac{3-x}{\left(x-2\right)^2\left(x+1\right)}dx$

$x^2+18x+35=0$