括号x平方-y平方-1括号平方-4x平方y平方 因式分解

白石952022-10-04 11:39:543条回答

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快乐广岛1945 共回答了18个问题 | 采纳率94.4%
(x²+y²-1)²-4x²y²
=(x²+y²-1-2xy)(x²+y²-1+2xy)
=[(x-y)²-1][(x+y)²-1]
=(x-y-1)(x-y+1)(x+y-1)(x+y+1)
1年前
夕颜Kazuki_1 共回答了9个问题 | 采纳率
平方差公式用一下
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FANCE_THE_WING 共回答了2个问题 | 采纳率
9=9=8n*9²等于2²的2²=3²1

快,采纳
1年前

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