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8x - 9 = 11x + 12 8x = 11x + 21 -3x = 21 x = -7
(8x + 3)2 ie (8x + 3)(8x + 3)
6x-7=8x+9 bring the x over -7=2x+9 take the 9 over -16=2x divide both sides by 2 x=-8
(5x 2 - 8x + 1) + (2x 2 - 4x - 11)
8x + x = 9x