(x的四次方+y的四次方)(x的二次方+y的二次方)(x+y)(x—y)等于多少呢

问题描述:

(x的四次方+y的四次方)(x的二次方+y的二次方)(x+y)(x—y)等于多少呢

(x^4+y^4)(x^2+y^2)(x+y)(x-y)还原
(x^4+y^4)(x^2+y^2)(x^2-y^2)
(x^4+y^4)(x^4-y^4)
x^8-y^8