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OpenStudy (ambermarie151):
solve this quadratic equation by completing the square x^2+6x =18
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jhonyy9 (jhonyy9):
x^2 +6x =18 add to both sides 9 x^2 +6x +9 = 27 (x+3)^2 = 27 x+3 = +/- 3sqrt3 x_1,2 = -3 +/- 3sqrt3 hope helped
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