Question

Calculati : a). [(1+ radical 5 ) - radical 6] .[(1+ radical 5)+ radical 6] b) [( radical 6 +( radical 3 - radical 2)] . [ radical 6 .( radical 3 - radical 2)

Answer 1

a) [(1+ radical 5- radical 6) · (1+ radical 5) + radical 6]=
(1+ radical 5+ radical 5 +5- radical 6-6 radical 5+radical 6)=
6-4 radical 5.

b) [( radical 6+ radical 3- radical 2) · ( radical 18- radical 12)]=
[(radical 6+ radical 3- radical 2)· (3 radical 2- 2 radical 3)]=
(3 radical 12- 2 radical 18+ 3 radical 6- 2 radical 9- 3 radical 4+ 2 radical 6)=
(3·2 radical 3- 2·3 radical 2+ 3 radical 6- 2·3 - 3·2+ 2 radical 6)=
(6 radical 3- 6 radical 2+ 3 radical 6- 6- 6 +2 radical 6)=
6 radical 3- 6 radical 2+ 5 radical 6- 12.


meh... sper sa fie corect si sa te fi ajutat :)