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数学
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因式分解:x
2
-2xy+y
2
-z
2
.
人气:378 ℃ 时间:2020-04-26 07:34:23
解答
原式=(x
2
-2xy+y
2
)-z
2
=(x-y)
2
-z
2
=(x-y+z)(x-y-z).
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