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分解因式:(x+y)2-10(x+y)+25=______.
人气:302 ℃ 时间:2020-09-21 06:07:09
解答
(x+y)2-10(x+y)+25=(x+y)2-10(x+y)+(-5)2=(x+y-5)2
故答案为:(x+y-5)2
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