Evaluate
36\sqrt{22}+255\approx 423.854967354
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255+12\sqrt{198}
Calculate the square root of 144 and get 12.
255+12\times 3\sqrt{22}
Factor 198=3^{2}\times 22. Rewrite the square root of the product \sqrt{3^{2}\times 22} as the product of square roots \sqrt{3^{2}}\sqrt{22}. Take the square root of 3^{2}.
255+36\sqrt{22}
Multiply 12 and 3 to get 36.
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