1. Podany iloczyn zapisz w postaci potęgi:
a) 7 do potęgi 9 x 3 do {9} x 8 do{9}
b) 45 do potęgi {4} x 20 do{4} x a do {2}
c) 56 do potęgi {20} x 20 do {20} x a do{20} x b do {20}
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