Question

упростите выражение!!!!!!

Answer 1

$(5 sqrt{2}- sqrt{18} ) sqrt{2}= (5 sqrt{2}- 3sqrt{2} ) sqrt{2}=2 sqrt{2}* sqrt{2}=2*2=4 \ \ ( sqrt{3}+ sqrt{2} )^2=3+2 sqrt{6}+2=5+2 sqrt{6}$