Question

$6 [ 2 \sqrt{12} -( \frac{7}{2 \sqrt{2} } - \frac{5}{3 \sqrt{3} } ) * 4 \sqrt{6} - \sqrt{18} ]$

Answer 1

6[4√3-(21√3-10√2).4√6/6√6-3√2]=
6(12√3-21√3+10√2-9√2)/3=2(√2-9√3)=2√2-18√3