Example

3(r+2s)=2t-4
a⋅(b-2)=3b
3(r+2s)=2t-4
a⋅(b-2)=3b

Question

$$\sqrt{ 3 } \times \sqrt{ 7 } \times \sqrt{ 21 }$$

Answer

21

Solution


Simplify.
\[\sqrt{441}\]
Since \(21\times 21=441\), the square root of \(441\) is \(21\).
\[21\]
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