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3 February, 01:44

Solve x2 - 24x = - 80 by completing the square.

What is the solution set of the equation?

{2, 40}

{4, 20}

{5, 16}

{8, 10}

+3
Answers (2)
  1. 3 February, 02:45
    0
    {4, 20}

    Step-by-step explanation:

    x2 - 24x = - 80

    divide - 24 by 2 and square result get 144

    x^2 - 24x + 144 = - 80 + 144

    (x - 12) ^2 = 64

    x - 12 = root (64)

    x = 12 + 8 or x = 12 - 8

    x = 20 or 4
  2. 3 February, 05:02
    0
    {4.20}

    Step-by-step explanation:

    b on edg
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