第125页

信息发布者:
D
$-2\sqrt{3}$
$10$
$ \begin{aligned}解:原式&=2\sqrt 2-2-2\sqrt 2 \\ &=-2 \\ \end{aligned}$
$ \begin{aligned}解:原式&=2\sqrt 2-5+6-3\sqrt 5 \\ &=1-\sqrt{5} \\ \end{aligned}$
$ \begin{aligned}解:原式&=2\sqrt 3-3-2\sqrt 3-1 \\ &=-4 \\ \end{aligned}$
解:
$\begin{aligned}&(\sqrt{3}-2)^3\times(\sqrt{3}+2)^3\\=&[(\sqrt{3}-2)(\sqrt{3}+2)]^3\\=&(3 - 4)^3\\=&(-1)^3\\=& - 1\end{aligned}$
$ \begin{aligned}解:原式&=6\sqrt 2-1-2+3 \\ &=6\sqrt{2} \\ \end{aligned}$
$ \begin{aligned} 解:原式&=8-12\sqrt 2+9-8+9 \\ &=18-12\sqrt 2 \\ \end{aligned}$
D
$28 + 12\sqrt{5}$
$\frac{4\sqrt{3}}{3}$