(1)分解因式:3x^2+6x+3=( ) (2)x^3y-2x^2y^2+xy^2=( )

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(1)分解因式:3x^2+6x+3=( ) (2)x^3y-2x^2y^2+xy^2=( )

(1)分解因式:3x^2+6x+3=( ) (2)x^3y-2x^2y^2+xy^2=( )
(1)分解因式:3x^2+6x+3=( ) (2)x^3y-2x^2y^2+xy^2=( )

(1)分解因式:3x^2+6x+3=( ) (2)x^3y-2x^2y^2+xy^2=( )
3x^2+6x+3
=3(x^2+2x+1)
=3(x+1)^2
x^3y-2x^2y^2+xy^3
=xy(x^2-2xy+y^2)
=xy(x-y)^2

第一个。3(x'2+2x)\7
第一个。3(x'2+2x)

1、3x^2+6x+3
=3(x^2+2x+1)
3(x+1)^2

2、x^3y-2x^2y^2+xy^2
=xy(x^2-2xy+y)