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29 April, 22:40

What are the possible values of x if (4x - 5) 2 = 49? Check all that apply.

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  1. 30 April, 00:41
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    3, - 1/2

    Step-by-step explanation:

    (4x - 5) ^2 = 49

    Take the square root of each side

    sqrt ((4x - 5) ^2) = ±sqrt (49)

    4x-5 = ±7

    Add 5 to each side

    4x - 5 + 5 = 5 ±7

    4x = 5±7

    Divide each side by 4

    4x/4 = (5±7) / 4

    x = (5±7) / 4

    First take the positive

    x = (5+7) / 4 = 12/4 = 3

    Then the negative

    x = (5-7) / 4 = - 2/4 = - 1/2
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