作业帮x^2-6xy+9y^2-2x+6y-3因式分解
来源：学生作业帮 编辑：作业帮 分类：数学作业 时间：2024/05/17 04:14:19
x^2-6xy+9y^2-2x+6y-3因式分解
x” - 6xy + 9y" - 2x + 6y - 3
= x” - 2x(3y) + (3y)” - 2x + 6y - 3
= ( x - 3y )" - 2( x - 3y ) + 1 - 4
= ( x - 3y + 1 )” - 2”
= ( x - 3y + 1 - 2 )( x - 3y + 1 + 2 )
= ( x - 3y - 1 )( x - 3y + 3 ) 再答： 对不起，我也做错了，应该是
= [ ( x - 3y ) - 1 ]” - 4
= ( x - 3y - 1 )” - 2”
= ( x - 3y - 1 + 2 )( x - 3y - 1 - 2 )
= ( x - 3y + 1 )( x - 3y - 3 )
再问： 哦好吧
= x” - 2x(3y) + (3y)” - 2x + 6y - 3
= ( x - 3y )" - 2( x - 3y ) + 1 - 4
= ( x - 3y + 1 )” - 2”
= ( x - 3y + 1 - 2 )( x - 3y + 1 + 2 )
= ( x - 3y - 1 )( x - 3y + 3 ) 再答： 对不起，我也做错了，应该是
= [ ( x - 3y ) - 1 ]” - 4
= ( x - 3y - 1 )” - 2”
= ( x - 3y - 1 + 2 )( x - 3y - 1 - 2 )
= ( x - 3y + 1 )( x - 3y - 3 )
再问： 哦好吧
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