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