1- 6y+y²1- 6y+y² 就这题,

来源：学生作业帮助网编辑：六六作业网时间：2024/12/29 03:27:57

1-6y+y²1-6y+y²就这题,1-6y+y²1-6y+y²就这题,1-6y+y²1-6y+y²就这题,1-6y+y²=9-6

1- 6y+y²1- 6y+y² 就这题,
1- 6y+y²
1- 6y+y² 就这题,

1- 6y+y²1- 6y+y² 就这题,
1- 6y+y²
=9-6y+y²-8
=3²-6y+y²-8
=(3-y)²-8