Evaluate
63
Factor
3^{2}\times 7
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3^{2}\left(\sqrt{7}\right)^{2}
Expand \left(3\sqrt{7}\right)^{2}.
9\left(\sqrt{7}\right)^{2}
Calculate 3 to the power of 2 and get 9.
9\times 7
The square of \sqrt{7} is 7.
63
Multiply 9 and 7 to get 63.
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