Question

$4 \sqrt{ 2} -5 \sqrt{2} +8 \sqrt{2} =$

Answer 1

4√2 - 5√2 + 8√2 = 
√2(4 - 5 + 8 ) =
√2 (4 + 8 - 5) =
√2 (12 - 5 ) = 
√2 (7)=
7√2