x^2-2(1+√2)x+4√2=0
问题描述:
x^2-2(1+√2)x+4√2=0
答
x^2-2(1+√2)x+4√2=0
(x-2√2)(x-2)=0
(x-2√2)=0 或(x-2)=0
所以x=2√2或x=2