\(\sqrt{0,04.5}-\sqrt{0,5^2}:\sqrt{\frac{1}{4}}\) ý you thế này hay là
\(B=\sqrt{0,04}.5-\sqrt{0,05}^2:\sqrt{\frac{1}{4}}\)
\(B=\frac{1}{5}.5-\frac{1}{20}:\frac{1}{2}\)
\(B=1-\frac{1}{20}.\frac{2}{1}\)
\(B=1-\frac{1}{10}\)
\(B=\frac{10}{10}-\frac{1}{10}\)
\(B=\frac{9}{10}\)