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C.m.m.d.c al nr. 54, 63, 72 ??

Răspuns :

54=2·3³
63=3²·7
72=2³·3²  ⇒(54,63,72)=3²=9
[tex]54=2*3*3*3=2* 3^{3} \\ 63=3*3*7= 3^{2}*7 \\ 72=2*2*2*3*3= 2^{3}* 3^{2} \\ ....................................................... \\ C.m.m.d.c(54;63;72):3*3= 3^{2}=\boxed{9}[/tex]