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27 September, 11:03

3. A positive number is 56 less than its square. Find the number.

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  1. 27 September, 12:02
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    Answer:8

    Step-by-step explanation:

    X+56=x^2

    X^2-x-56=0

    X^2-8x+7x-56=0

    X (x-8) + 7 (x-8) = 0

    (X+7) (x-8) = 0

    X+7=0 or x-8=0

    X=-7 or x=8
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