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đây là đề \(\frac{88986\times2003-678}{88985\times2003+1325}\)
\(=\frac{\left(88985+1\right)\times2003+-678}{88985\times2003+1325}\)
\(=\frac{88985\times2003+2003-678}{88985\times2003+1325}\)
\(=\frac{88985\times2003+1325}{88985\times2003+1325}\)
\(=1\)
Nếu \(x\)= 1 thì :
y = \(\frac{1}{2}+\frac{1}{1}+\frac{8898611325}{8898513328}\) . y = 2,500011013
Nếu \(x\)= 4 thì :
y = \(\frac{1}{8}+\frac{1}{2}+\frac{8898641325}{8898543328}\) . y = 1,625011013
Nếu \(x\)= 9 thì :
y = \(\frac{1}{18}+\frac{1}{3}+\frac{8898691325}{8898593328}\) . y = 1,132489645
\(=\frac{\left(88985+1\right)\times2003+-678}{88985\times2003+1325}\)
\(=\frac{88985\times2003+2003-678}{88985\times2003+1325}\)
\(=\frac{88985\times2003+1325}{88985\times2003+1325}\)
\(=1\)