[根号(45/4)-根20-5根号(1/18)]-[根245/6+根号(45/2)]

Question

[根号(45/4)-根20-5根号(1/18)]-[根245/6+根号(45/2)]

Answer 1

=√[(3/2)²×5]-√(2²×5)-5√(2/6²)-√(7²×5)/6-√[(3/2)²×10]
=(3/2)√5-2√5-(5/6)√2-(7/6)√5-(3/2)√10
=(-5/3)√5-(5/6)√2-(3/2)√10