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27 September, 21:13

If 4a^2 = 144 then a is?

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  1. 27 September, 21:18
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    4a²=144

    a²=144/4

    a²=36

    a=⁺₋√36

    a=⁺₋6

    Answer: we have two values for a; a=-6; and a=6

    we check it out:

    if a=-6

    4 (-6) ²=4*36=144

    if a=6

    4 (6) ²=4*36=144
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