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- 6x² - 8x = - 7 + 3x
- 6x² - 8x - 3x + 7 = 0
- 6x² - 11 x + 7 = 0 ...kalikan dengan - 1
6x² + 11x - 7 = 0
(3x + 7)(2x - 1) = 0
3x + 7 = 0 atau 2x - 1 = 0
3x = - 7 atau 2x = 1
x = - atau x =