Question

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

x² + 14x + 40
O AX-9
O B. 32 + 10
O C. X* 14
D. X+4.

Answer 1

• D. x + 4

Explanation:

Let's factor the trinomial:

• x² + 14x + 40 =
• x² + 4x + 10x + 40 =
• x(x + 4) + 10(x + 4) =
• (x + 4)(x + 10)

x + 4 is between the answer options

Correct option is D.