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29 April, 04:51

Work out the two possible answers 2b2 (2b squared) + 4 = 12

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  1. 29 April, 08:08
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    b = ±2

    Step-by-step explanation:

    2b^2 + 4 = 12

    Subtract 4 from each side

    2b^2 + 4-4=12-4

    2b^2 = 8

    Divide by 2 on each side

    2b^2 / 2 = 8/2

    b^2 = 4

    Take the square root on each side

    sqrt (b^2) = ± sqrt (4)

    b = ±2
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