2x方减去2倍根号2x+1=0
问题描述:
2x方减去2倍根号2x+1=0
用陪方法的公式法解方程
答
2x²-2√2x+1=0
(√2x)²-2√2x+1=0
(√2x-1)²=0
√2x-1=0
x=1/√2
x=√2/2