(x2+y2)2-4x2y2 因式分解=(x²+y²+2xy)(x²+y²-2xy)=(x+y)²(x-y)²如果本题有什么不明白可以追问,如果满意记得采纳如果有其他问题请采纳本题后另发点击向我求助,答题不易,请谅解,谢谢。祝学习进步
(x2+y2)2-4x2y2=(x2+y2-2xy)(x2+y2+2xy)=(x-y)²(x+y)²
(x2+y2)2-(2xy)2(x2+y2+2xy)(x2+y2-2xy)(x+y)2*(x-y)2