问题 填空题

(x-y)(x+y)(x2+y2)(x4+y4)…(x2n+y2n)=______.

答案

(x-y)(x+y)(x2+y2)(x4+y4)…(x2n+y2n),

=(x2-y2)(x2+y2)(x4+y4)…(x2n+y2n),

=x4n-y4n

单项选择题
单项选择题