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50 la puterea 20 X 20 la puterea 28

Răspuns :

50²⁰×20²⁸ =

= 5²⁰×10²⁰×2²⁸×10²⁸

= 10⁴⁸×5²⁰×2²⁰×2⁸

= 10⁴⁸×10²⁰×2⁸

= 10⁶⁸×2⁸

Răspuns:

50=2 • 5^2 =>50^20 = (2 • 5^2)^20 = 2^20 • 5^40

20=2^2 • 5 =>20^28 = (2^2 • 5)^28 = 2^56 • 5^28

2^20 • 5^40 • 2^56 • 5^28 = 2^76 • 5^68 = (2•5)^68 • 2^8 =

10^68 • 2^8