Question

Simplify the rational expression. State any restrictions on the variable.
posting pic

Answer 1

\[\huge{\frac{k^2-k-2}{k^2-4k-5}}\]\[\huge{\frac{k^2-2k+k-2}{k^2-5k+k-5}}\]\[\huge{k(k-2)+1(k-2) \over k(k-5)+1(k-5)}\]\[\huge{\frac{(k+1)(k-2)}{(k+1)(k-5)}}\]