计算(x²+y²)²(x+y)²(x-y)²
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计算(x²+y²)²(x+y)²(x-y)²
计算(x²+y²)²(x+y)²(x-y)²
计算(x²+y²)²(x+y)²(x-y)²
(x²+y²)²(x+y)²(x-y)²
=(x²+y²)²(x²-y²)²
=(x^4-y^4)²
=x^8-2x^4y^4+y^8
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(x²+y²)²(x+y)²(x-y)²=(x²+y²)²(x²-y²)²=(x^4-y^4)^2