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posted by BERNIE Saturday, August 18, 2012 at 9:36am.
can you help me to solve for completing the squar x^2+18x=-4
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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