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3x^2-3y^2+x-y 因式分解
人气:318 ℃ 时间:2020-03-30 01:30:13
解答
3x^2-3y^2+x-y
=3(x^2-y^2)+(x-y)
=3(x+y)(x-y)+(x-y)
=(x-y)[3(x+y)+1]
=(x-y)(3x+3y+1)
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