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

  • A -6, -4
  • B 6, -4
  • C 6, 4
  • D -6, 4
  • E 5, 5
waec 1989mathematics

The correct answer is D. -6, 4

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

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