Question

One of the factors of g2 − 28g + 196 is

a. g-7
b. g-14
c. g+14
d. g+7

Answer 1

To factorise simple polynomials such as this, find a pair of numbers which produce the final term (196) and sum to the second term (-28). -14 and -14 result in this, thus the factorised form is (g-14)(g-14).

Answer 2

so B