Вариант 1.
1. А
${-4.2*\sqrt{3^{2}}=-4.2*3=-12.6}$
2. В
${\sqrt{32}*\sqrt{2}-\frac{\sqrt{242}}{\sqrt{2}}=
\\=\sqrt{32*2}-\sqrt{\frac{242}{2}}=
\\=\sqrt{64}-\sqrt{121}=8-11=-3}$
3. В
${\frac{24}{\sqrt{2}}=\frac{24*\sqrt{2}}{\sqrt{2}*\sqrt{2}}=
\\=\frac{24*\sqrt{2}}{2}=12*\sqrt{2}}$
4. ${\sqrt{81m^{2}n}=9m\sqrt{n}}$
5. ${\frac{26x-x^{2}}{x-36}=0
\\\frac{x(26-x)}{x-36}=0
\\x=0
\\x=26
}$
1. А
${-4.2*\sqrt{3^{2}}=-4.2*3=-12.6}$
2. В
${\sqrt{32}*\sqrt{2}-\frac{\sqrt{242}}{\sqrt{2}}=
\\=\sqrt{32*2}-\sqrt{\frac{242}{2}}=
\\=\sqrt{64}-\sqrt{121}=8-11=-3}$
3. В
${\frac{24}{\sqrt{2}}=\frac{24*\sqrt{2}}{\sqrt{2}*\sqrt{2}}=
\\=\frac{24*\sqrt{2}}{2}=12*\sqrt{2}}$
4. ${\sqrt{81m^{2}n}=9m\sqrt{n}}$
5. ${\frac{26x-x^{2}}{x-36}=0
\\\frac{x(26-x)}{x-36}=0
\\x=0
\\x=26
}$
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