x-3分之3x²-27=0.,求x值
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/09 07:41:13
![x-3分之3x²-27=0.,求x值](/uploads/image/z/1644871-31-1.jpg?t=x-3%E5%88%86%E4%B9%8B3x%26%23178%3B-27%3D0.%2C%E6%B1%82x%E5%80%BC)
x)5~dgqγMO$T_`gCItd52;gV wβ5 S Ap@%4hThkj5j,tu@ "cKm젾s0tU"+ "
x-3分之3x²-27=0.,求x值
x-3分之3x²-27=0.,求x值
x-3分之3x²-27=0.,求x值
(3x²-27)/﹙x-3﹚=0
即 3﹙x²-9﹚/﹙x-3﹚=0
即 3(x+3)(x-3)/(x-3)=0
即3(x+3)=0
∴x=﹣3
3(x+3)=0
x=-3