(a-b)(a^2+b^2+ab)-(a+b)(a^2+b^2-ab)
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Answer:
(-2b³)
Step-by-step explanation:
(a-b)(a²+b²+ab) - (a+b)(a²+b²-ab)
= a³-b³-(a³+b³)
= a³-b³-a³-b³
= (-2b³)
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