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31 December, 18:57

Solve by using the perfect squares method.

(2x + 4) 2 = 64

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Answers (1)
  1. 31 December, 21:21
    0
    (2x + 4) ² = 64

    Taking the square root of both sides:

    2x + 4 = ±8

    subtract 4 from both sides:

    2x = - 4 ± 8

    And dividing 2 from both sides:

    x = - 2 ± 4

    x = - 6 and 2
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