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12 October, 19:06

Two times a number plus the square of the number equals 35. find the number.

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  1. 12 October, 19:19
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    X=5; you need to set up an equation and the equation would be:

    x^2 + 2x = 35

    subtract 35 from each side

    x^2 + 2x - 35 = 0

    (x + 7) (x - 5)

    x = - 7,5

    49 - 14 = 35

    25 + 10 = 35
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