Evaluate
7n^{2}
Expand
7n^{2}
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n^{2}\left(\sqrt{7}\right)^{2}
Expand \left(n\sqrt{7}\right)^{2}.
n^{2}\times 7
The square of \sqrt{7} is 7.
n^{2}\left(\sqrt{7}\right)^{2}
Expand \left(n\sqrt{7}\right)^{2}.
n^{2}\times 7
The square of \sqrt{7} is 7.
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