解方程:(x-1)²=0.25 (3x-4)²=(4x-3)² 2x²+根号(5)x-2=0
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解方程:(x-1)²=0.25 (3x-4)²=(4x-3)² 2x²+根号(5)x-2=0
解方程:(x-1)²=0.25 (3x-4)²=(4x-3)² 2x²+根号(5)x-2=0
解方程:(x-1)²=0.25 (3x-4)²=(4x-3)² 2x²+根号(5)x-2=0
(x-1)²=0.25
x-1=±0.5
x=1.5或x=0.5
(3x-4)²=(4x-3)²
3x-4=4x-3,解得x=-1
或3x-4=-4x+3,解得x=1
2x²+根号(5)x-2=0
x=(-根号5±根号21)/4