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______.

(x2+y2)(x+y)(x-y)=(x2+y2)(x2-y2)=x4-y4
故应填4.