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posted by amber Wednesday, September 12, 2012 at 12:47pm.

x^2=8x-9 solve by completing the square to obtain exact solutions

x^2 - 8x + .... = -9 + .... x^2 - 8x + 16 = -9 + 16 (x-4)^2 = 7 x-4 ± √7 x = 4 ± √7

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