第49页

信息发布者:
解:​$\sqrt {100}=10$
解:​$\sqrt {\frac {25}{121}}= \frac {5}{11}$
解:​$-\sqrt {0.01}=-0.1$
解:​$-\sqrt {1 \frac {32}{49}}$​
​$=-\sqrt {\frac {81}{49}}$​
​$=-\frac {9}{7}$​
​解:原式$=\frac {7}{12}×\frac {12}{3}$​
​$=\frac {7}{3}$​
解:
$\sqrt{36} = \sqrt{6^2} = 6$
解:
$\sqrt{5^2 - 4^2} = \sqrt{25 - 16} = \sqrt{9} = 3$
​解:原式$=-\sqrt {\frac {49}{16}}+\sqrt 4$​
​$=-\frac {7}{4}+2$​
​$ =\frac {1}{4}$​
B
D
0,1
$\sqrt{x}=9$
解:原式=1
解:原式= -6
解:原式= 25
解:原式​$=0.2-0.5$​
​$= -0.3$​