(a+b)(a-b)(a^4+a^2b^2+b^4)/(b^6-a^6)求详细过程,感激不尽!

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(a+b)(a-b)(a^4+a^2b^2+b^4)/(b^6-a^6)求详细过程,感激不尽!

(a+b)(a-b)(a^4+a^2b^2+b^4)/(b^6-a^6)求详细过程,感激不尽!
(a+b)(a-b)(a^4+a^2b^2+b^4)/(b^6-a^6)
求详细过程,感激不尽!

(a+b)(a-b)(a^4+a^2b^2+b^4)/(b^6-a^6)求详细过程,感激不尽!
=(a²-b²)(a^4+a^2b^2+b^4)/(b^6-a^6)
=(a^6-b^6)/(b^6-a^6)
=-(b^6-a^6)/(b^6-a^6)
= -1