√24=2√6
1/√2=√2/2
2/2√3=1/√3=√3/3
1/√8=√2/4
(√24-[1/√2]+[2/2√3])-([1/√8]+√6)
=2√6-√2/2+√3/3-√2/4-√6
=√6-[3√2/4]+√3/3