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algebra help

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I need help with this problem not understanding it. Give exact and approximate solutions to three decimal places. x^2+6x+9= 81 what are the exact solutions? x=___ There are no approximate solutions since the solutions are integers.

  • algebra help -

    x^2 + 6 x - 72 = 0
    (x-6)(x+12) = 0
    x = 6 or x = -12

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