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(4x^2-4x+1)(2x-1) =
8x^3-12x^2+6x-1
jawabannya C untuk no 8
(5n-2)(2n-1)(2n-1) =
(10n^2-9n+2)(2n-1) =
20n^3-28n^2+13n-2 jadi jawabannya C untuk no 9 :)