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因式分解x^2-6xy+9y^2-10x+30y+25
人气:298 ℃ 时间:2020-01-30 12:52:46
解答
x^2-6xy+9y^2-10x+30y+25
=(x-3y)^2-10(x-3y)+25
=(x-3y-5)^2
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