-3(2xkwadtar+12x-1x-6)=
-6xkwadrat-36x+3x+18=
-6xkwadrat-33x+18
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-3(2xkwadtar+12x-1x-6)=
-6xkwadrat-36x+3x+18=
-6xkwadrat-33x+18