解方程4(2-x)²=9
来源:学生作业帮助网 编辑:作业帮 时间:2024/09/11 09:18:08
![解方程4(2-x)²=9](/uploads/image/z/5248892-20-2.jpg?t=%E8%A7%A3%E6%96%B9%E7%A8%8B4%282-x%29%26%23178%3B%3D9)
x}j@_% ;Y\l>@ e Ƀ驒M{+t3Ele~fM{smC=M8yzw3(D"51p:W`5>-sLj}5c;
P9U(`F{Ju{,ڛr
>h<%F^ x3C#um%"j1umg6Au|wm
解方程4(2-x)²=9
解方程4(2-x)²=9
解方程4(2-x)²=9
4(2-x)²=9
(x-2)²=9/4
x=2±3/2
则x1=7/2,x2=1/2
4(2-x)²=9
4(4-4x+x²)=9
4x²-16x+16-9=0
4x²-16x+7=0
(2x-7)(2x-1)=0
x=7/2,
x=1/2
4(2-x)²=9
4(4-4x x²)=9
16-16x 4x²=9
(4-2x)²=9
4-2x=3或4-2x=-3
2x=1或2x=7
x=1/2或x=7/2
望采纳 纯手打