Question

help.$frac{4 k^{2}- p^{2} }{(p-2k) ^{2} }$

Answer 1

$frac{4 k^{2}- p^{2} }{(p-2k) ^{2} }=frac{(2 k- p)(2k+p) }{(2k-p) ^{2} }= frac{2k+p}{2k-p}$