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11 September, 11:22

What are the solution (s) of x2-4=0

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Answers (2)
  1. 11 September, 11:33
    0
    First you add 4 on both sides

    X^2=0

    Then you take square on both sides

    X = + - the square root of 4

    Simplify that

    X=plus or minus 2

    The answer can be either - 2 or + 2 (which is just 2)
  2. 11 September, 11:47
    0
    Is that x^2 - 4 = 0?

    Then the two solutions are x = 2 and x = - 2
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