x²-2x=2x+1
问题描述:
x²-2x=2x+1
答
x²-2x=2x+1
x²-4x-1=0
x=(4±2根号2)/2
x=2±根号2
x²-2x=2x+1
x²-2x=2x+1
x²-4x-1=0
x=(4±2根号2)/2
x=2±根号2