计算(a+b)(a^2-ab+b^2)-(a-b)(a^2+b^2)

2025-02-26 18:20:57
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回答1:

(a+b)(a^2-ab+b^2)-(a-b)(a^2+b^2)
=a^3+b^3-a^3-ab^2+a^2b+b^3
=2b^3-ab^2+a^2b