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31 December, 20:47

The square of a number is equal to 10 less than 7 times that number. What are two possible solutions

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  1. 31 December, 21:15
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    Answer:y=2 or 5

    Step-by-step explanation:

    let the number be y

    y^2=7y-10

    y^2-7y+10=0

    y^2-2y-5y+10=0

    y (y-2) - 5 (y-2) = 0

    (y-2) (y-5) = 0

    y-2=0 y-5=0

    y=2 y=5
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