(a2-b2)(a2+ab+b2)(a2-ab+b2)=
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(a2-b2)(a2+ab+b2)(a2-ab+b2)=
(a2-b2)(a2+ab+b2)(a2-ab+b2)=
(a2-b2)(a2+ab+b2)(a2-ab+b2)=
(a2-b2)(a2+ab+b2)(a2-ab+b2)
解,得:
==(a2-b2)[(a2+b2)+ab]*[(a2+b2)-ab]
==(a2-b2)[(a2+b2)^2-a^2b^2]
==(a2-b2)(a^4+2a^2b^2+b^4-a^2b^2)
==(a2-b2)(a^4+a^2b^2+b^4)
==a^6-b^6
(a2-b2)(a2+ab+b2)(a2-ab+b2)
=(a-b)(a2+ab+b2)(a+b)(a2-ab+b2)
=(a³-b³)(a³+b³)
=a^6-b^6
(a2-b2)(a2+ab+b2)(a2-ab+b2)=
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