Question

Найти значение:
$sqrt{3-2 sqrt{2} }$

Answer 1

$sqrt{3-2sqrt2} = sqrt{(1-sqrt2)^2} =|1-sqrt2|=sqrt2-1\\P.S.; ; ; (1-sqrt2)^2=1-2cdot 1cdot sqrt2+(sqrt2)^2=1-2sqrt2+2=3-2sqrt2$