(2x-1) ^3 by using standard formula
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Step-by-step explanation:
(2x-1)^3
=(2x)^3-3.a^2b+3.a.b^2-b^3
=8x^3-12x^2b+6xb^2(ans)
it is not (2x-1)(4x^2+2x+1) it occurs for a^3-b^3 . And you give (a+b)^3
understand
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