Simplify the expression sqrt(7! + 6!), where n! stands for n(n-1)(n-2) ... 2*1.
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+2666 \(\sqrt{7! + 6!} \)
\(\sqrt{6!(7 + 1)}\)
\(\sqrt{720 \times 8}\)
\(\sqrt{2^7 \times 3^2 \times 5}\)
\(24 \sqrt{2 \times 5}\)
\(\color{brown}\boxed{24 \sqrt{10}}\)
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