Question

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Answer 1

What is the square root of 90 times the square root of 40?

Answer 2

\[\sqrt{90}\sqrt{40}=\sqrt{9*10}\sqrt{4*10}=\sqrt{9}\sqrt{10}\sqrt{4}\sqrt{10}\]
\[=3(\sqrt{10})2(\sqrt{10})=6\sqrt{10}\sqrt{10}=6\sqrt{10(10)}=6\sqrt{100}\]
\[6(10) = 60\]

Answer 3

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