计算 (x+y)(x-y)(x²+y²)(x四次方+y四次方)
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计算 (x+y)(x-y)(x²+y²)(x四次方+y四次方)
计算 (x+y)(x-y)(x²+y²)(x四次方+y四次方)
计算 (x+y)(x-y)(x²+y²)(x四次方+y四次方)
(x+y)(x-y)(x²+y²)(x四次方+y四次方)
=(x²-y²)(x²+y²)(x四次方+y四次方)
=(x四次方-y四次方)(x四次方+y四次方)
=x^8-y^8