Simplify

$7!=5040$

$6!=720$

$7!+6!=5040+720=5760$

$5760=2*2*2*2*2*2*2*3*3*5$

$=2^6*3^2*2*3*5$

$\sqrt(5760)=24\sqrt(30)$ 

That is the answer, 24*sqrt(30).

For some reason, I cannot get the LaTeX to work on square roots. Does anyone know why?