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16 August, 05:20

Solve for x. 3x ^2 - 4 = 8

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  1. 16 August, 05:26
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    x = ±2

    Step-by-step explanation:

    3x ^2 - 4 = 8

    Add 4 to each side

    3x ^2 - 4+4 = 8+4

    3x^2 = 12

    Divide each side by 3

    3x^2 = 12

    3x^2/3 = 12/3

    x^2 = 4

    Take the square root of each side

    sqrt (x^2) = ±sqrt (4)

    x = ±2
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