a) 9³⁰ si 5⁴⁵
9³⁰ = ( 9² ) ¹⁵ = 81¹⁵
5⁴⁵ = ( 5³ )¹⁵ = 125¹⁵
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b) 10⁹⁰ si 6¹³⁵
10⁹⁰ = ( 10² )⁴⁵ = 100⁴⁵
6¹³⁵ = ( 6³ ) ⁴⁵ = 216⁴⁵