八年级数学计算1/(√2-1)-丨-√8丨+√2

问题描述:

八年级数学计算1/(√2-1)-丨-√8丨+√2
√=根号

1/(√2-1)-丨-√8丨+√2
=(√2+1)/(√2-1)*(√2+1)-|-2√2|+√2
=√2+1-2√2+√2
=1