Factorise 9x³ - 6x² + 12x
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9x^3-6x^2+12×
3×^2 (3×÷2)+12
(3×^2+12)(3×-2)
3×^2+12 = 3×^2 = -12
×^2=-12/3=×=6 or ×=2/3
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