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30 October, 03:29

What multiplies to be 42 and adds to be 23?

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  1. 30 October, 05:31
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    A) x * y = 42 (or x = 42/y)

    B) x + y = 23

    B) 42/y + y = 23

    42 + y^2 = 23y

    y^2 - 23y + 42 = 0

    The numbers are 21 and 2
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