Question

$sqrt{8} -0,2 sqrt{200m} +3 sqrt{72m}$

Answer 1

= √(4*2) - 0,2√(100*2m) + 3√(36*2m)=
= 2√2 - 0.2*10√(2m) + 3*6√(2m)=
= 2√2 - 2√(2m) + 18√(2m)=
= 2√2 + 16√(2m)