电子课本网 第132页

第132页

信息发布者:
C
B
​$2\sqrt x$​
​$\frac {\sqrt 5}4$​
​$\sqrt 2$​
​$\frac {1}{2} \sqrt {17}$​
​$2\sqrt {2}$​
​$8\sqrt {2}$​
​$=\sqrt {\frac {49}{9}}$​
​$=\frac {7}{3}$​
​$=\frac {\sqrt {81}×\sqrt {125}}{\sqrt {144}}$​
​$=\frac {9×5\sqrt 5}{12}$​
​$=\frac {15\sqrt {5}}{4}$​
​$ =\frac {11b^2\sqrt b}{4a}$​
​$=\sqrt {\frac {4x^2y}{4xy}}$​
​$ =\sqrt x$​
​$=\sqrt {\frac {54}{3}}$​
​$=\sqrt {18}$​
​$=3\sqrt {2}$​
​$=\frac {\sqrt {2}}{6}$​
​$=\frac {5\sqrt {n}}{3}$​
​$=y \sqrt {2x}$​
​$= \sqrt {\frac {16}5×\frac 58}$​
​$=\sqrt 2$​
​$= \sqrt {\frac {b}5×\frac {20a^2}{b}}$​
​$= \sqrt {4a^2}$​
​$=2|a|$​
​$= \sqrt {\frac {a}4}$​
​$=\frac {\sqrt {a}}2$​
​$=\frac 12\sqrt {xy· \frac x{y^3}}$​
​$=\frac 12\sqrt {\frac {x^2}{y^2}}$​
​$ =\frac {x}{2y}$​
​$= \sqrt {\frac {b}{a}· \frac 1{ab}· \frac {a^3}{b^2}}$​
​$= \sqrt {\frac {a}{b^2}}$​
​$=\frac {\sqrt a}{b}$​