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16 August, 15:22

Fifteen times the square of a non zero number is equal to 15 times the number what is the number?

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  1. 16 August, 15:42
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    1

    because

    1^2=1

    1^2*15=15

    1*15=15

    So 1^2*15=1*15

    Equation looks like this

    15x^2=15x

    subtract 15x

    15x^2+15x=0

    factor

    15x (x-1) = 0

    solutions are 0 or 1 but seeing it said non zero number it must be 1
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