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28 September, 11:51

Determine the solution set of (x + 2) 2 = 36.

{6, - 8}

{4, - 8}

{4, - 6}

+2
Answers (1)
  1. 28 September, 12:13
    0
    (x + 2) ^2 = 36

    x^2 + 4x + 4 = 36

    x^2 + 4x - 32 = 0

    (x + 8) (x - 4) = 0

    x+8 = 0

    x = - 8

    x-4=0

    x = 4

    answer is {4, - 8} (second choice)
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