(x+y)^4+(x²-y²)²+(x-y)^4【因式分解】
答案:3 悬赏:50 手机版
解决时间 2021-08-11 22:49
- 提问者网友:疯子也有疯子的情调
- 2021-08-11 18:28
(x+y)^4+(x²-y²)²+(x-y)^4【因式分解】
最佳答案
- 五星知识达人网友:执傲
- 2021-08-11 20:08
原式=(x+y)^4+2(x²-y²)²+(x-y)^4-(x²-y²)²=【(x+y)²+(x-y)²】²-(x²-y²)²=【2x²+2y²】²-(x²-y²)²=【2x²+2y²+(x²-y²)】【2x²+2y²-(x²-y²)】=【3x²+y²】【x²+3y²】
全部回答
- 1楼网友:患得患失的劫
- 2021-08-11 22:34
原式=[(x+y)²]²+2(x²-y²)²+[(x-y)²]²-(x²-y²)²
=[(x+y)²]²+2(x+y)²(x-y)²+[(x-y)²]²-(x+y)²(x-y)² 设x+y=a x-y=b
原式=(a²)²+2a²b²+(b²)²-a²b²
=(a²+b²)²-a²b²
=(a²+b²-ab)(a²+b²+ab)
=[(x-y)²+(x+y)²-x²+y²][(x-y)²+(x+y)²+x²-y²]
=[x²-3y²][3x²+y²]
- 2楼网友:深街酒徒
- 2021-08-11 21:00
(x+y)^4+(x^2-y^2)^2+(x-y)^4
=((x+y)^2)^2+((x-y)^2)^2+2(x+y)^2(x-y)^2-2(x+y)^2(x-y)^2+(x^2-y^2)^2
=[(x+y)^2+(x-y)^2]^2-(x^2-y^2)^2
=(2x^2+2y^2)^2-(x^2-y^2)^2
=(2x^2+2y^2+x^2-y^2)(2x^2+2y^2-x^2+y^2)
=(3x^2+y^2)(x^2+3Y^2)
我要举报
如以上问答信息为低俗、色情、不良、暴力、侵权、涉及违法等信息,可以点下面链接进行举报!
大家都在看
推荐资讯