Răspuns:
a. radical 30 plus radical 30 = 2 radical 30
b. radical 2 minus 2 radical 2 = minus radical 2
c. rezultatul este radical 3
d. 6 minus 3 radical 7 plus 2 radical 7 minus 6 = minus radical 7
e. 2 radical 3 plus 3 radical 6 x 2 radical 2 = 2 radical 3 plus 6 radical 12 = 2 radical 3 plus 12 radical 3 = 14 radical 3
f. 8 x 2 radical 2 minus 20 radical 2 = 16 radical 2 minus 20 radical 2 = minus 4 radical 2
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