Question

( 3 raiz quadrada de 2 - 2 ) . ( raiz quadrada de 2 + 3)

Answer 1

 (3√2 - 2).(√2 + 3)=
 (3√2.√2)+(3√2.3) -2√2 - 6=
 3.2 + 9√2 - 2√2 - 6 =
 6 + 7√2 - 6 = 7√2