3(-4a+1)(a-1)+2(6a-4)(a+3)

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3(-4a+1)(a-1)+2(6a-4)(a+3)3(-4a+1)(a-1)+2(6a-4)(a+3)3(-4a+1)(a-1)+2(6a-4)(a+3)(-12a+3)(a-1)+(12a-8)(

3(-4a+1)(a-1)+2(6a-4)(a+3)
3(-4a+1)(a-1)+2(6a-4)(a+3)

3(-4a+1)(a-1)+2(6a-4)(a+3)
(-12a+3)(a-1)+(12a-8)(a+3)=
-12a2+12a+3a-3+12a2+36a-8a-24=
43a-27