3. Calculați:
a. 2 radical 3+3•4 radical 3 ;
b. 5 radical 2-2 radical 2•2 ;
c. radical 6•(3 radical 5-2 radical 5)- radical 2• radical 15 ;
d. (4 radical 2- radical 2)• radical 2+ radical 2• radical 18 ;
e. radical 3•(2 radical 5+3 radical 5) - radical 5• ( radical 3+2 radical 3) ;
f. 2•(radical 12- radical 3) + ( radical 27- radical 48)•3.
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