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Nanina07
a fost răspuns

1)scrie sub forma unei singure puteri: 3^5×3^4×3^6
172^3×172^5
2)calculeaza:

a)25^16×25^14:25^28
b)3^3×5-3^3×4
c) (7^6-7^4):48
d)4^10-3×4^9-3×4^8-3×4^7-.....- 3
e) 2^10×a-2^9×b daca2×a-b=17