根号2减1分之1加根号8-根号2加11/√2-1+√8-√2+1

分类: 作业答案 • 2022-07-17 18:20:03

问题描述：

根号2减1分之1加根号8-根号2加1
1/√2-1+√8-√2+1

答

2根号2加2

答

根号8加2

答

根号2减1分之1加根号8-根号2加1
=1/(√2-1)+√8-√2+1
=(√2+1)/(√2+1)(√2-1)+2√2-√2+1
=√2+1+√2+1
=2√2+2