用配方法怎么解方程4x²-4x+1=0
问题描述:
用配方法怎么解方程4x²-4x+1=0
答
4x^2-4x+1=0
x^2-x+1/4=0
x^2-2*1/2x+1/4-1/4+1/4=0
(x-1/2)^2=0
x=1/2