Question

write (2x+1)cube in expanded form​

Answer 1

Answer:

using id (x+y)^3

xcube + ycube +2xy(x+y)

(2x)^3 + 1cube +2(2x)(1)(2x+1)

8x^3 +1+4x(2x+2)

8x^3+ 1+8x^2+8x

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