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15 July, 18:09

What values of x are solutions for x to the power of two plus two x equals eight

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  1. 15 July, 18:13
    0
    X^2+2x=8

    x^2+2x-8=0

    m+n=2

    mn = - 8

    m = - 2

    n = 4

    (x-2) (x+4) = 0

    x can be 2 or 4
  2. 15 July, 18:32
    0
    So the equation is x^2 + 2x = 8?

    The solution would be 2, because 2 x 2 = 4, and 2 ^2 is equal to 4 as well. 4 + 4 = 8.

    Just so you know - this little thing '^' is how you write 'to the power of'.
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