^ – значок степени.
а⁵*(а⁷)⁸*а^(–13)=а⁵*а⁵⁶*а^(–13)= а^(5+56–13)=а⁴⁸
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^ – значок степени.
а⁵*(а⁷)⁸*а^(–13)=а⁵*а⁵⁶*а^(–13)= а^(5+56–13)=а⁴⁸