Выполни задание

Найди \(x-y\) .

\(x\approx 4,85\cdot 10^{-5}, y\approx 9\cdot 10^{-6}\) ;

\(x-y\approx 4,85\cdot 10^{-5}-9\cdot 10^{-6}=4,85\cdot 10^{-5}-\dfrac{9}{10}\cdot 10^{-5}=(4,85-0,9)\cdot 10^{-5}=3,95\cdot 10^{-5}\approx 4,0\cdot 10^{-5}\) ;

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1. \(x\approx 6,2\cdot 10^4\) , \(y\approx 3,8\cdot 10^{3}\) ; \(x-y\approx\) ...;

2. \(x\approx 3,8\cdot 10^{-7}\) , \(y\approx 2,39\cdot 10^{-8}\) ; \(x-y\approx\) ...