Evaluate
18\sqrt{2455}\approx 891.863218212
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9\sqrt{9801+19}
Calculate 99 to the power of 2 and get 9801.
9\sqrt{9820}
Add 9801 and 19 to get 9820.
9\times 2\sqrt{2455}
Factor 9820=2^{2}\times 2455. Rewrite the square root of the product \sqrt{2^{2}\times 2455} as the product of square roots \sqrt{2^{2}}\sqrt{2455}. Take the square root of 2^{2}.
18\sqrt{2455}
Multiply 9 and 2 to get 18.
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