作业帮解方程x²-5x+2=0
来源：学生作业帮助网 编辑：作业帮 时间：2024/11/16 02:54:18
x){|i;PS64565I*)_`g_'68# VmdoPA
]S}#8#P;o747 " $Ajp(N]P)H6Dmm|1 (PSP*" "w
解方程x²-5x+2=0
解方程x²-5x+2=0
解方程x²-5x+2=0
x²-5x+2=0
x^2-5x=-2
x^2-5x+25/4=-2+25/4
x^2-5x+25/4=17/4
(x-5/2)^2=17/4
x=(5+根号17)/2,x=(5-根号17)/2
x²-5x+2=0
x²-5x+25/4-17/4=0
(x-5/2)²=17/4
x-5/2=±√17/2
x = 5/2±√17/2
x = (5±√17)/2