$\lim_{x\to2}\left(\frac{\left(x-2\right)^2}{x^2-4}\right)$

$\frac{-4p}{36-4p}$

$\int\left(\left(\sqrt{\left(1-\sqrt{x}\right)}\right)\right)dx$

$\frac { n ^ { 4 } + 2 n ^ { 3 } + n ^ { 2 } } { 4 }$

$\frac{cos\left(b\right)}{sec\left(b\right)-tan\left(b\right)}$

$y^2-12y$

$\int_2^3\left(1+x^6\right)^{\frac{1}{2}}dx$