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(2a^(3)-b^(3))^(3)-b^(9)...

`(2a^(3)-b^(3))^(3)-b^(9)`

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Verified by Experts

The correct Answer is:
`2(a-b)(a^(2)+ab+b^(2))(4a^(6)-2a^(3)b^(3)+b^(6))`
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