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数学
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分解因式:(x-1)
2
-4=______.
人气:142 ℃ 时间:2020-05-09 12:44:11
解答
(x-1)
2
-4,
=(x-1)
2
-2
2
,
=(x-1-2)(x-1+2),
=(x-3)(x+1),
故答案为:(x-3)(x+1).
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