Question

factor k^2+kf-2f^2

Answer 1

Where are you stuck?

Answer 2

Hint: break -2f^2 into -f^2 -f^2

Answer 3

that doesnt make sense

Answer 4

of course, that just a hint, you have to apply that hint into your problem
OK, one more offer:
\[k^2-f^2-f^2+kf\]
the first 2 terms can be factored as (k+f)(k-f)
the last 2 terms is...? ( you factor f out) what do you get?

Answer 5

figured it out
k^2 + kf - 2f^2
= k^2 - kf + 2kf - 2f^2
= k(k - f) + 2f(k - f)
= (k + 2f)(k - f)

Answer 6

ok, good, your way is better than my way. hihihi... \(\rightarrow\) you are better than me. hihihi