（√18-√27）÷√6+8√(1/2)=多少?
问题描述：
（√18-√27）÷√6+8√(1/2)=多少?
答
（√18-√27）÷√6+8√(1/2)
=√3（√6-√9）÷(√3*√2)+4√[4*(1/2)]
=(√6-√9）÷√2+4√2
=(√6-√9)*√2÷(√2*√2)+4√2
=(√6-√9)*√2÷2+4√2
=(2√3-3√2)÷2+4√2
=√3-3√2/2+4√2
=√3+5√2/2