用公式法解(3-y)²=2y(y-3)3x²-(x+2)²+2x=0

来源：学生作业帮助网编辑：六六作业网时间：2024/11/09 03:57:58

用公式法解(3-y)²=2y(y-3)3x²-(x+2)²+2x=0用公式法解(3-y)²=2y(y-3)3x²-(x+2)²+2x=0用公

用公式法解(3-y)²=2y(y-3)3x²-(x+2)²+2x=0
用公式法解(3-y)²=2y(y-3)
3x²-(x+2)²+2x=0

用公式法解(3-y)²=2y(y-3)3x²-(x+2)²+2x=0
(3-y)²=2y(y-3)
=(3-y)²-2y(y-3)
=(3-y)²+2y(3-y)
=(3-y)(3-y+2y)
=(3-y)(3+y)