RÄspuns:
ExplicaČie pas cu pas:
a^n/a^m = a^n : a^m = a^(m-n)
a) 2^20/2^21 = 1/(2^21 : 2^20) = 1/[2^(21-20)] = 1/2^1 = 1/2
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b) 3^34/3^37 = 1/3^3
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c) 5^63/5^65 = 1/5^2
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g) 2^49/8^17 = 2^49/(2^3)^17 = 2^49/2^51 = 1/2^2
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h) 8^25/16^20 = (2^3)^25/(2^4)^20 = 2^75/2^80 = 1/2^5
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j) 9^17/3^37 = (3^2)^17/3^37 = 3^34/3^37 = 1/3^3
Sper ca ai inteles cum se rezolva. Succes!
