Mathematics

Solve for x: (x2 + 2x + 1) = 25

Solve for x: (x2 + 2x + 1) = 25
  • A.
    -6, -4
  • B.
    6, -4
  • C.
    6, 4
  • D.
    -6, 4
  • E.
    5, 5
Correct Answer: Option D
Explanation

x2 + 2x + 1 = 25
x2 + 6x – 4x -24= 0
x(x + 6) – 4(x + 6) = 0
(x – 4) – (x + 6) = 0
x = 4 or -6 = -6,4