(x+2y)2*(x-2y)2
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解决时间 2021-02-07 19:49
- 提问者网友:呐年旧曙光
- 2021-02-06 19:06
(x+2y)2*(x-2y)2
最佳答案
- 五星知识达人网友:想偏头吻你
- 2021-02-06 20:34
(x+2y)²*(x-2y)²=(x²-4y²)²=x^4-8x²y²+y^4
如果是:(x+2y)²-(x-2y)²
=[(x+2y)+(x-2y)]*[(x+2y)-(x-2y)]
=2x*4y
=8xy
如果是:(x+2y)²-(x-2y)²
=[(x+2y)+(x-2y)]*[(x+2y)-(x-2y)]
=2x*4y
=8xy
全部回答
- 1楼网友:酒醒三更
- 2021-02-06 21:15
(x+2y)^2*(x-2y)^2
=[(x+2y)(x-2y)]^2
=(x^2-4y^2)^2
=x^4-8x^2y^2+16y^4
- 2楼网友:话散在刀尖上
- 2021-02-06 20:53
(x+2y)(x+2y)(x-2y)(x-2y)
=(x+2y)(x-2y)(x+2y)(x-2y)
=(x^2-4y^2)(x^2-4y^2)
=x^4-8x^2y^2+16y^4
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