Question

решите пожалуйста *^*

Answer 1

(3-√2)(1+√2) √(9-4√2) =
=(3-√2+3√2-2) √(1-2√2)² =
=(1+2√2)|1-2√2|=
=(2√2+1)(2√2-1)=
=(2√2)² -1 =
=4*2 -1=
=8 -1=7
Ответ: 7.