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8 June, 16:04

When 8 is subtracted from the square of a number, the result is 7 times the number. Find the negative solution.

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  1. 8 June, 18:00
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    Step-by-step explanation:

    X2 - 8 = 7x

    X2 - 7x - 8 = 0

    X2 - 8x+x - 8=0

    X (x-8) + 1 (x-8) = 0

    (X-8) (x+1) = 0

    X-8=0 or x+1=0

    X=8 or x=-1
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