(x+y)^2(x-y)^2(x^4+x^2y^2+y^4)^2
问题描述：
(x+y)^2(x-y)^2(x^4+x^2y^2+y^4)^2
30分钟内回答please ,thankyou
答
(x+y)^2(x-y)^2(x^4+x^2y^2+y^4)= { (x+y) (x-y) }^2 (x^4+x^2y^2+y^4)= ( x^2-y^2 )^2 (x^4+x^2y^2+y^4)= ( x^2-y^2 ) { ( x^2-y^2 ) (x^4+x^2y^2+y^4) }= ( x^2-y^2 ) { ( x^2)^3 - (y^2) ^3 }= ( x^2-y^2 ) ( x^6...