Question

V9-4V5+V14-6V5 помогите

Answer 1

$sqrt{9-4sqrt5}+sqrt{14-6sqrt5}=sqrt{(2-sqrt5)^2}+sqrt{(3-sqrt5)^2}=\\=|2-sqrt5|+|3-sqrt5|=-(2-sqrt5)+(3-sqrt5)=1\\P.S.\Tak; kak; ; (2-sqrt5)approx 2-2,24 textless 0; ,to; |2-sqrt5|=-(2-sqrt5)=sqrt5-2\\Tak; kak; ; (3-sqrt5)approx 3-2,24 textgreater 0; ,; to; |3-sqrt5|=3-sqrt5$