64x cubed -27

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?????????????? wot quesshun ??????????? . . . 64x^3 -27 fit jenral form a^3 -b^3 . . . a=4x, b=3 . . . become (a-b)*(a^2 +ab+b^2) . . . =(4x-b)*(16x^2 +12x +9)
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