Question

Which of the binomials below is a factor of this trinomial?

x2 + 13x + 40
A. x+ 5
B. X+4.
C. X-5
D. X-4

Answer 1

x+5 is the factor..

Explanation:

xsquare + (8+5)x + 40

or, xsquare +8x+5x+40

or, x(x+8)+5(x+8)

(x+5)(x+8)