(x+y)(x²+y²)(x-y)(x的四次方+y的四次方)_数学解答

(x+y)(x²+y²)(x-y)(x的四次方+y的四次方)

人气：434 ℃　时间：2020-02-03 05:05:43

解答

原式=(x+y)(x-y)(x^2+y^2)(x^4+y^4)
=(x^2-y^2)(x^2+y^2)(x^4+y^4)
=(x^4-y^4)(x^4+y^4)
=x^8-y^8