电子课本网 第107页

第107页

信息发布者:
解:原式​$=\sqrt {\frac {10}{3}÷\frac {3}{2}}$​
​$ =\sqrt {\frac {20}{9}}$​
​$ =\frac {2\sqrt {5}}{3}$

解:原式
​$=\sqrt {\frac {9}{12}÷\frac {54}{12}÷6}$​
​$ =\sqrt {\frac {1}{36}}$​
​$=\frac {1}{6}$​
解:原式​$=-\frac {4}{5}\sqrt {5÷\frac {9}{5}}$​
​$ =-\frac {4}{5}×\frac {5}{3}$​
​$ =-\frac {4}{3}$​
​$-\sqrt {1-a}$​
解:原式​$=\frac {2\sqrt {3}}{3}$​
解:原式​$=\frac {\sqrt {120}}{24}$​
​$ =\frac {\sqrt {30}}{12}$​
解:原式​$=\frac {\sqrt {ab}}{a}$​
解:原式​$=-\frac {4}{3}÷\frac {2}{3}\sqrt {18÷8÷54}$​
​$ =-2\sqrt {\frac {1}{24}}$​
​$ =-\frac {2}{\sqrt {24}}$​
​$ =-\frac {\sqrt {6}}{6}$​
解:原式​$=-\frac {15}{8}\sqrt {\frac {64}{27}÷\frac {25}{8}}$​
​$ =-\frac {15}{8}×\sqrt {\frac {64×8}{27×25}}$​
​$ =-\frac {15}{8}×\frac {16\sqrt {2}}{15\sqrt {3}}$​
​$ =-\frac {2\sqrt {6}}{3}$​