Question

What is the complete factorization of x² + 4x-45? OA (X+15X(x - 3) OB. (x-9)(x+5) OC. (x+9XX-5) OD. (x-15)(x+3)​

Answer 1

(x+9)(x-5)

x * x = x^2

9 * x = 9x

5 * x = 5x

9x + 5x = 14x

-5 x 9 = -45

x^2 + 9x + 5x -45

x^2 + 14x - 45