Question

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

x^2 + 14x + 40

A. x + 4

B. x^2 + 4

C. x + 10

D. x - 9

Answer 1

A , C

Explanation:

x² + 14x + 40 = ( x + 4 )( x + 10 )

main formula: x² + ( a + b )x + ab = ( x + a )( x + b )