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x2 + 6x + 12 = 0

x2 + 6x + 9 = -3

(x + 3)2 = -3

x + 3 = ± √-3

x = -3 ± i√3

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โˆ™ 2012-02-05 19:41:02
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Q: What are the roots of x2 plus 6x plus 12 equals 0?
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