Question

8√3-5√48-0,2√75=
(5+√2)^2-10√2=
(√5-2)(√5+2)-5=
√3(2√3-√81)=
(√m-√n)^2=

Answer 1

1)8√3-5√3×16-0,2√3×25=8√3-20√3-√3=-13√3
2) =25+2×5×√2+2-10√2=27
3=5+2√5-2√5-4-5=-4
4)2√3×√3-√3×√81=6-9√3
5)=m-2√m×n+n