问题 解答题

(a-b)(a+b)(a2+b2)(a4+b4)(a8+b8

答案

(a-b)(a+b)(a2+b2)(a4+b4)(a8+b8),

=(a2-b2)(a2+b2)(a4+b4)(a8+b8),

=(a4-b4)(a4+b4)(a8+b8),

=(a8-b8)(a8+b8),

=a16-b16

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