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exercitii de clasa 8 la matematica
Se dau exercitii 108si 54
b)Scristi cite 5 elementeale multimilor M108,M54.
d)Determinati c.m.m.m.c.al numerelor 108 si 54.


Răspuns :

b)[tex] M_{108} =0,108,216,324,432,540...[/tex]
[tex] M_{54}=0,54,108,162,216,... [/tex]
d)[tex]108= 2^{2}x 3^{3} [/tex]
[tex]54=2x 3^{3} [/tex]
c.m.m.m.c.(108,54)=[tex] 2^{2} x 3^{3} =108[/tex]

a. M108=[0,108,216,324,432];
b. M54=[0,54,108,216,324];
c. 108=2²·3³⇒descompunere in factori primi;
54=2·3³;
⇒c.m.m.m.c=2²·3³=4·27=108;