3x - 4 = -2 The answer is x=2/3
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That factors to 2(x + 4)(x + 6) x = -4, -6
If that's +28, the answer is (x - 4)
2(x - 6)(x + 6)
2x2-x-15 = 0 When factorised: (2x+5)(x-3) = 0
The factorisation is as follows: 2x2 + 7x - 9 = (x - 1)(2x + 9).