解方程22x²-121x+231=0
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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