7 класс!2 примера с степенями
(6^k*6^4*5^4*5^k)/(6*6^3*6^k*5^3*5^k)=5
(7^2/2^2)^4*2^9/7^5=(7^8/7^5)*(2^9/2^8)=7^3*2=686
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(6^k*6^4*5^4*5^k)/(6*6^3*6^k*5^3*5^k)=5
(7^2/2^2)^4*2^9/7^5=(7^8/7^5)*(2^9/2^8)=7^3*2=686