因式分解 3x^2+4xy+y^2-5x-3y+2

来源：学生作业帮编辑：大师作文网作业帮分类：数学作业时间：2024/11/14 03:02:29

3x^2+4xy+y^2-5x-3y+2=
(3x^2+4xy+y^2)-5x-3y+2=
(3x+y)(x+y)-(3x+y)-2x-2y+2=
[(3x+y)(x+y)-(3x+y)]-2(x+y-1)=
(3x+y)(x+y-1)-2(x+y-1)=
(x+y-1)(3x+y-2)

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