If x^2 +2x = 15, then one possible value of x – 4 =
Choose the correct choice from the following choices:
A) -8 B) -5 C) -3 D) -1 E) 5
x^2 +2x = 15   i.e. x^2 +2x - 15 = 0   i.e. x^2 +5x -3x - 15 = 0   i.e. (x+5)(x-3) = 0   i.e. x =-5 or 3   i.e. x-4 = -5-4 or 3-4   i.e. x-4 = - 9 or -1   Answer: Option -1
<result>D</result>
If x^2 +2x = 15, then one possible value of x – 4 =