Question

$(9+ sqrt{2}) ^{2} = \ (1-4 sqrt{3}) ^{2} = \ ( 2 sqrt{10}-3 sqrt{2} ) ^{2} = \ (4 sqrt{5}-2 sqrt{3} ) ^{2} =$

Answer 1

(9+√2)^2=81+18√2+2=83+18√2
(1-4√3)^2=1-8√3+48=49-8√3
(2√10-3√2)^2=40-12√20+18=58-12√20
(4√5-2√3)^2=80-16√15+12=92-16√15