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-3 radical 27 =......
radical 256......ajutatimaaa urgentaa


Răspuns :

 [tex]-3\sqrt{27}=-3\cdot\sqrt{9\cdot3}=-3\cdot3\sqrt3=-9\sqrt3\;;\\ \sqrt{256}=\sqrt{2^8}=\sqrt{(2^4)^2}=2^4=16\;;[/tex]