k=3p+2p=5p
\begin{gathered}\frac{k^2-6kp}{k^2-5p^2} =\frac{(5p)^2-6*5p*p}{(5p)^2-5p^2} =\frac{25p^2-30p^2}{25p^2-5p^2} =\frac{-5p^2}{20p^2} =-\frac{1}{4}=-0.25 \\ \\\end{gathered}
k
2
−5p
2
k
2
−6kp
=
(5p)
2
−5p
2
(5p)
2
−6∗5p∗p
=
25p
2
−5p
2
25p
2
−30p
2
