Question

Упростить выражение (4-√2)^2+4√8

Answer 1

=(16-2·4·√2+2)+4√(4·2)=
=16+2-8√2+4√4√2=
=18-8√2+4·2√2=
=18-8√2+8√2=
=18

Answer 2

  (4 - √2)^2 + 4√8 =  
= 16 - 8√2 + 2 + 4√8 = 
= 16 - 8√2 + 2 + 8√2 = 
= 18