(4根号2-3)÷2根号2等于多少?
问题描述:
(4根号2-3)÷2根号2等于多少?
﹙4√2-3﹚÷2√2
答
(4根号2-3)÷2根号2
=2-3÷2根号2
=2-3√2/4