Question

Please help asap. 55 points

Answer 1

The answer would be B. Using the foil method to check, the two k's equal k^2, then the k and -f would equal -fk, plus the 2fk would equal a positive fk. Lastly, the 2f and -f would equal -2f^2.

Answer 2

$k^2+kf-2f^2$
=$k^2+kf-f^2-f^2$
=$k^2-f^2+kf-f^2$
=$(k+f)(k-f)+f(k-f)$
=$(k+2f)(k-f)$
B