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Posted by on Thursday, December 13, 2012 at 1:14pm.

X^2-4x-24=0

  • Math solve for x - , Thursday, December 13, 2012 at 1:30pm

    complete the square

    x^2 - 4x + ... = 24 + ..
    x^2 - 4x + 4 = 24 + 4
    (x-2)^2 = 28
    x-2 = ±√28
    x = 2 ± 2√7

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