Tháng Năm 8, 2026

Tính: \(\begin{array}{l}a)\,\,\sqrt {\frac{{289}}{{225}}} \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,b)\,\,\sqrt {2\frac{{14}}{{25}}} \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,c)\,\,\sqrt {\frac{{0,25}}{9}} \\d)\,\,\sqrt {1\frac{{16}}{9}.5\frac{4}{9}.0,01} \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,e)\,\,\sqrt {\frac{{{{149}^2} – {{76}^2}}}{{{{457}^2} – {{384}^2}}}} \end{array}\) A \(\begin{array}{l} a)\,\,\,\frac{{27}}{{15}} & & & b)\,\,\frac{8}{5}\\ c)\,\,\frac{1}{6} & & & d)\,\,\frac{7}{{24}}\\ e)\,\,\frac{{15}}{{29}} \end{array}\) B \(\begin{array}{l} a)\,\,\,\frac{{17}}{{15}} & & & b)\,\,\frac{8}{5}\\ c)\,\,\frac{1}{6} & & & d)\,\,\frac{17}{{24}}\\ e)\,\,\frac{{15}}{{29}} \end{array}\) C \(\begin{array}{l} a)\,\,\,\frac{{17}}{{15}} & & & b)\,\,\frac{8}{5}\\ c)\,\,\frac{1}{6} & & & d)\,\,\frac{7}{{24}}\\ e)\,\,\frac{{25}}{{29}} \end{array}\) D \(\begin{array}{l} a)\,\,\,\frac{{17}}{{15}} & & & b)\,\,\frac{8}{5}\\ c)\,\,\frac{1}{6} & & & d)\,\,\frac{7}{{24}}\\ e)\,\,\frac{{15}}{{29}} \end{array}\)

Tính: \(\begin{array}{l}a)\,\,\sqrt {\frac{{289}}{{225}}} \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,b)\,\,\sqrt {2\frac{{14}}{{25}}} \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,c)\,\,\sqrt {\frac{{0,25}}{9}} \\d)\,\,\sqrt {1\frac{{16}}{9}.5\frac{4}{9}.0,01} \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,e)\,\,\sqrt {\frac{{{{149}^2} – {{76}^2}}}{{{{457}^2} – {{384}^2}}}} \end{array}\) A \(\begin{array}{l} a)\,\,\,\frac{{27}}{{15}} & & & b)\,\,\frac{8}{5}\\ c)\,\,\frac{1}{6} & …

Tính giá trị của tổng \(B = \sqrt {1 + \frac{1}{{{1^2}}} + \frac{1}{{{2^2}}}} + \sqrt {1 + \frac{1}{{{2^2}}} + \frac{1}{{{3^2}}}} + \sqrt {1 + \frac{1}{{{3^2}}} + \frac{1}{{{4^2}}}} + … + \sqrt {1 + \frac{1}{{{{99}^2}}} + \frac{1}{{{{100}^2}}}} \) A \(B = 100\) B \(B = 12\) C \(B = 0\) D \(B = 99,99\)

Tính giá trị của tổng \(B = \sqrt {1 + \frac{1}{{{1^2}}} + \frac{1}{{{2^2}}}} + \sqrt {1 + \frac{1}{{{2^2}}} + \frac{1}{{{3^2}}}} + \sqrt {1 + \frac{1}{{{3^2}}} …