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11 November, 09:59

Solve the equation, x^2 - 2x - 8 = 0 by completing the square.

A. x = 4 or x = - 2

B. x = 4 or x = 2

C. x = - 4 or x = - 2

D. x = - 4 or x = 2

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Answers (2)
  1. 11 November, 10:00
    0
    D). Is the correct answer!

    x2 + 2x - 8 = 0

    (x + 4) (x - 2) = 0

    x = - 4 or x = 2
  2. 11 November, 10:21
    0
    x^2 - 2x - 8 = 0

    (x-4) (x+2) = 0

    x - 4 = 0 then x = 4

    x + 2 = 0 then x = - 2

    answer is A. x = 4 or x = - 2
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Home » Mathematics » Solve the equation, x^2 - 2x - 8 = 0 by completing the square. A. x = 4 or x = - 2 B. x = 4 or x = 2 C. x = - 4 or x = - 2 D. x = - 4 or x = 2
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