Задание 4, стр 21

Question

Вычислите.
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a) $\sqrt{3} \cdot \sqrt{12}\quad$
b) $\sqrt{8} \cdot \sqrt{2}\quad$
c) $\sqrt{5} \cdot \sqrt{20}\quad$
d) $\sqrt{0,1} \cdot \sqrt{1,6}$

Gimli · Accepted Answer

\begin{enumerate}[label=alph*]
\item $$\sqrt{3}\cdot \sqrt{12} = \sqrt{3\cdot 12} = \sqrt{36} = \sqrt{6^2} = {\color{red}{6}}.$$
\item $$\sqrt{8}\cdot \sqrt{2} = \sqrt{8\cdot 2} = \sqrt{16} = \sqrt{4^2} = {\color{red}{4}}.$$
\item $$\sqrt{5}\cdot \sqrt{20} = \sqrt{5\cdot 20} = \sqrt{100} = \sqrt{10^2} = {\color{red}{10}}.$$
\item $$\sqrt{0.1}\cdot \sqrt{1.6} = \sqrt{0.1\cdot 1.6} = \sqrt{0.16} = \sqrt{0.4^2} = {\color{red}{0.4}}.$$
\end{enumerate}

Задание 4, стр 21

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Задание 4, стр 21

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