Name the binomial you can multiply by (x + 9) to get the product x^2 + 5x - 36.

A. 4 - x
B. x + 6
C. x - 4
D. x - 6

1 answer

Y = x^2+5x-36 = 0
-36 = -4*9, -4+9 = 5 = B.
(x-4)(x+9) = 0.