将xn-yn分解因式的结果为(x2+y2)(x+y)(x-y),则n的值为_.
问题描述:
将xn-yn分解因式的结果为(x2+y2)(x+y)(x-y),则n的值为______.
答
(x2+y2)(x+y)(x-y)=(x2+y2)(x2-y2)=x4-y4.
故应填4.