(y+√2)^2=4√2y用配方法解
问题描述:
(y+√2)^2=4√2y用配方法解
答
(y+√2)^2=4√2y
可得(y-√2)^2=0
所以y=√2
(y+√2)^2=4√2y用配方法解
(y+√2)^2=4√2y
可得(y-√2)^2=0
所以y=√2