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第114页

信息发布者：

$420\sqrt 2$

$ \begin{aligned} 解:原式&=\sqrt {16×6} \\ &=4\sqrt{6} \\ \end{aligned}$

$ \begin{aligned} 解:原式&=\sqrt {x^2[(b-c)^2]^2} \\ &=x(b-c)^2 \\ \end{aligned}$

$解:原式=\sqrt {(25+5)(25-5)}$

$\hspace{1.4cm}=\sqrt {100×6}$

$\hspace{1.4cm}=10\sqrt{6}$

$ \begin{aligned}解:原式&=\sqrt {x^2(x^2+1)} \\ &=x\sqrt{x^2+1} \\ \end{aligned}$

$ \begin{aligned}解:原式&=\sqrt {4x^2(4x+2y)} \\ &=2x\sqrt{4x+2y} \\ \end{aligned}$

$ \begin{aligned}解:原式&=\sqrt {x(x^2-2xy+y^2)} \\ &=\sqrt {x(x-y)^2} \\ &=(x-y)\sqrt x \\ \end{aligned}$

$ \begin{aligned}解:原式&=\sqrt {8×24} \\ &=\sqrt {64×3} \\ &=8\sqrt{3} \\ \end{aligned}$

$ \begin{aligned}解:原式&=\sqrt {3}×(-2\sqrt 3) \\ &=-6 \\ \end{aligned}$

$ \begin{aligned} 解:原式&=\sqrt {27xy^2} \\ &=\sqrt {9y^2•3x} \\ &=3y\sqrt{3x} \\ \end{aligned}$

$ \begin{aligned}解:原式&=\sqrt {18m^3n×12n^3} \\ &=\sqrt {36m^2n^4×6m} \\ &=6mn^2\sqrt{6m} \\ \end{aligned}$

$0.02ab$

$6 \sqrt{15}$