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23 October, 11:50

W^2+5w=104

W^2 is w to the second power

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  1. 23 October, 12:15
    0
    Minus 104 from both sides

    w²+5w-104=0

    ok, factor

    what 2 numbers multiply to get - 104 and add to get 5?

    -8 and 13

    (w-8) (w+13) = 0

    set to zero

    w-8=0

    w=8

    w+13=0

    w=-13

    w=-13 or 8
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