学帮网解分解因式,9(x-y)²-6(y-x)+1
来源：学生作业学帮网 编辑：学帮网 时间：2024/06/17 01:24:50
解分解因式,9(x-y)²-6(y-x)+1
9(x - y)" - 6(y - x) + 1
= 9(x - y)" + 6(x - y) + 1
= 9(x - y)" + 3(x - y) + 3(x - y) + 1
= 3(x - y)[ 3(x - y) + 1 ] + [ 3(x - y) + 1 ]
= [ 3(x - y) + 1 ]( 3x - 3y + 1 )
= ( 3x - 3y + 1 )"