计算(a-b)²(a+b)²(a²+b²)²
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计算(a-b)²(a+b)²(a²+b²)²
计算(a-b)²(a+b)²(a²+b²)²
计算(a-b)²(a+b)²(a²+b²)²
解
(a-b)²(a+b)²(a²+b²)²
=[(a-b)(a+b)]²(a²+b²)²
=(a²-b²)²(a²+b²)²
=[(a²-b²)(a²+b²)]²
=(a^4-b^4)²
=a^8-2a^4b^4+b^8
^8是八次方
^4是四次方
解(a-b)²(a+b)²(a²+b²)²
=﹙a²-b²﹚²﹙a²+b²﹚²
=﹙a^4-b^4﹚²
=a^8-2a^4b^4+b^8.