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THE GCF of 18 and 9 is 9
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7Improved Answer:8x2-18x+9 = (4x-3)(2x-3)
(x+9)^2 =x^2 + 9 X^2 + 18x + 81 = X^2 +9 18X + 72 = 0 18X = -72 X =- 4
4x2 - 36x + 81 = 4x2 - 18x - 18x +81 = 2x(2x - 9) - 9(2x - 9) = (2x - 9)2
The GCF is 9.
The GCF is 3.