Question

If 3 is one of the zeroes of polynomial p (x) = x3 +3x2 + kx – 24, then k = ___________.

Answer 1

Answer:

3*3+3*2+3k-24=0

9+6+3k-24=0

15-24+3k=0

-9+3k=0

3k=9

k=9/3

(k=3)