Question

If (x-2) is a factor of xsquare+3x+5a find the value of a

Answer 1

a = -2

Explanation:

(x-2) (x+b) = x² + (b-2) x - 2b = x² + 3x + 5a

b-2 = 3

b = 5

5a = - 2b = - 10

a = -2