Question

这道数学题怎么做？求解谢谢

Answer 1

(1)
√(-10)^2 -(√5)^2
=10-5
=5
(2)
(√48-√27)/√3
=√16-√9
=4-3
=1
(3)
√18 -√(1/2) +√8
=3√2- (1/2)√2 + 2√2
=(9/2)√2
(4)
√2/(√3-√2) + √(1/6)
=√2.(√3+√2) +(1/6)√6
=√6 +2 + (1/6)√6
=(7/6)√6 + 2