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19 April, 03:33

How do I solve x^2-9=0

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Answers (2)
  1. 19 April, 04:56
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    You make x^2 equal 9 so you subtract and get zero. In this case, x = 3 because 3 times itself is 9 and 9-9 = 0
  2. 19 April, 06:01
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    X² - 9 = 0

    x² + 3x - 3x - 9 = 0

    (x - 3) (x + 3) = 0

    x - 3 = 0 or x + 3 = 0

    + 3 + 3 - 3 - 3

    x = 3 x = - 3
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