factorise 9x^2-6x+1
(step wise answer plz)
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9x²-6x+1=0
9x²-3x-3x+1=0
3x(3x-1)-1(3x-1)=0
(3x-1) (3x-1)=0
3x-1=0 or 3x-1=0
3x=1 or 3x=1
x=1/3 or x=1/3
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