(5√8-√50)-(6√0.5-√4.5)怎么化简?
问题描述:
(5√8-√50)-(6√0.5-√4.5)怎么化简?
答
(5√8-√50)-(6√0.5-√4.5)
=(5√8-√50)-[6√(1/2)-√(9//2)]
=(10√2-5√2)-[3√2-(3/2)√2]
=5√2-(3/2)√2
=-(7/2)√2