Examine whether the following numbers are rational or irrational.… - Vidyadip

Question

Examine whether the following numbers are rational or irrational.$\sqrt{8}\times\sqrt{2}$

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Answer

As $\sqrt{8}\times\sqrt{2}$$=\sqrt{8\times2}$
$=\sqrt{16}$
$=4,$ which is an integer
Hence, $\sqrt{8}\times\sqrt{2}$ is rational.

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