Ответ:
Объяснение:1) =(3^21(12+7)·57 /(19²·3^24)=(19·57)/(19²·3³)=57/(19·3·9)=1/9.
2)=(5^21(2^5 ·5-2))/ 5^20=5·2(2^4·5-1)=10·79=790.
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Ответ:
Объяснение:1) =(3^21(12+7)·57 /(19²·3^24)=(19·57)/(19²·3³)=57/(19·3·9)=1/9.
2)=(5^21(2^5 ·5-2))/ 5^20=5·2(2^4·5-1)=10·79=790.