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descompuneti in produs de puteri de factori primi numerele;20, 50, 12, 3000, 800, 2100 si 70000.

Răspuns :

20=2²×5
50=2
×5²
12=2
²×3
3000=2
³×3×5³
800
=2⁵×5²
2100 
=2²×3×5²×7
70000
=2⁴×5⁴×7