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x^n-y^n可以分解为(x+y)(x-y)(x^2+xy+y^2)(x^2-xy-y^2),则n=?

题目详情
x^n-y^n可以分解为(x+y)(x-y)(x^2+xy+y^2)(x^2-xy-y^2),则n=?
▼优质解答
答案和解析
(x+y)(x-y)(x^2+xy+y^2)(x^2-xy-y^2)
=(x-y)(x^2+xy+y^2)(x+y)(x^2-xy-y^2)
=(x^3-y^3)(x^3+y^3)
=x^6-y^6
所以n=6