x²-22/5=21/5=0x²-22/5+21/5=0
来源：学生作业帮助网 编辑：六六作业网 时间：2024/11/28 17:09:36
x²-22/5=21/5=0x²-22/5+21/5=0x²-22/5=21/5=0x²-22/5+21/5=0x²-22/5=21/5=0x
x²-22/5=21/5=0x²-22/5+21/5=0
x²-22/5=21/5=0
x²-22/5+21/5=0
x²-22/5=21/5=0x²-22/5+21/5=0
x²-22/5+21/5=0
5x²-22+21=0
(5x-7)(x-3)=0
x1=7/5 x2=3