Evaluate
54\sqrt{11}+198\approx 377.097738679
Factor
18 \sqrt{11} {(\sqrt{11} + 3)} = 377.097738679
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18\left(\sqrt{11}\right)^{2}+54\sqrt{11}
Use the distributive property to multiply -9\sqrt{11} by -2\sqrt{11}-6.
18\times 11+54\sqrt{11}
The square of \sqrt{11} is 11.
198+54\sqrt{11}
Multiply 18 and 11 to get 198.
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