Question

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

5x2 + 15x -50
O A. X-10
O B. X-2
O C. x+10
O D. x+ 2

Answer 1

5( x+5) (x-2)

Explanation:

5x^2 + 15x -50

Factor out a 5

5(x^2 +3x - 10)

What 2 terms multiply to -10 and add to 3

5*-2 = -10

5-2 = 3

5( x+5) (x-2)