algebra2

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can you help me to solve for completing the squar x^2+18x=-4

  • algebra2 -

    x^2 + 18x = -4
    take half of the 18, square it, then add to both sides
    x^2 + 18x + 81 =-4 + 81
    (x+9)^2 = 77
    x+9 = ±√77
    x = -9 ± √77

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