解方程22x²-121x+231=0
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/30 02:04:41
![解方程22x²-121x+231=0](/uploads/image/z/13887487-55-7.jpg?t=%E8%A7%A3%E6%96%B9%E7%A8%8B22x%26%23178%3B%EF%BC%8D121x%EF%BC%8B231%3D0)
解方程22x²-121x+231=0
解方程22x²-121x+231=0
解方程22x²-121x+231=0
22x²-121x+231=0 方程化简方程,两边除以11:
2x²-11x+21=0
△=b²-4ac=121-2x21x4=-47
2x²-11x+21=0
△=b²-4ac=121-2x21x4=-47<0 ,所以无解
因为△=b^2-4ac=(-121)^2-4*22*231=-5687<0,所以该方程无实根