6x + 9 + 2x = 8x + 9
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6x - 9 + 2x + 1 = 8x -8
4x2 - 12x + 9 = 4x2 - 6x - 6x + 9 = 2x(2x - 3) - 3(2x - 3) = (2x - 3)(2x - 3) or (2x - 3)2
(4x - 3)(2x + 3)
3x-2y+9+9y-x = 2x+7y+9
6x + 9 = -3 6x/3 + 9/3 = -3/3 2x + 3 = -1 2x + 3 - 3 = -1 - 3 2x = -4 2x/2 = -4/2 x = -2