Factorise the following polynomials.(3a-1)^2-6a+2
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(3a-1)² -6a+2 = 9a²-6a+1-6a+2 =9a²-12a+3 =9a²-(9+3)a+3 =9a²- 9a-3a+3 =9a(a-1)-3(a-1) =(9a-3)(a-1)
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