化简(2根号5减去根号2)平方
问题描述:
化简(2根号5减去根号2)平方
答
(2√5-√2)^2
=20+2-2√2*2√5
=22-4√10
化简(2根号5减去根号2)平方
(2√5-√2)^2
=20+2-2√2*2√5
=22-4√10