(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
