根号8-根号2等于多少
问题描述:
根号8-根号2等于多少
答
√8-√2
=√(4*2)-√2
=2√2-√2
=√2
根号8-根号2等于多少
√8-√2
=√(4*2)-√2
=2√2-√2
=√2