Fractorise 3xsquare-12x+12
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3xsquare-12x+12
3xsquare-(6+6)x+12
3xsquare-6x-6x+12
3x(x-2)-6(x-12)
(3x-6)(x-12)
x=3/6,x=12
x=1/2,x=12
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