Mathematics, 28.01.2020 20:13, dootdootkazoot

Hey guyss i need with 3 of these questions : )
i'm supposed to express these with positive exponents
1. 2a^-4/5b^-2
2. (5a^3n)^3
3. (x^n+5/y)^2

Answers: 3

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Hey guyss i need with 3 of these questions : )
i'm supposed to express these with positive ex...