Question

How do you factor the expression `k^2+ kf-2f^2`?

Answer 1

`(k+2f)(k-f)`

Explanation:

`k^2+kf-2f^2`
=`k^2+kf-f^2-f^2` this is the important part
=`k^2-f^2+kf-f^2`
=`(k+f)(k-f)+f(k-f)`
=`(k+2f)(k-f)`