expand 2 X + 1 by 3 X whole power cube
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Step-by-step explanation:
(2X+1/3X )^3
(2x+1)^3/(3x)^3
(2x)^3+(1)^3+3(2x)(1)(2x+1)/27x^3
8x^3+1+6x(2x+1)/27x^3
8x^3+1+12x^2+6x/27x^3
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