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