Evaluate
-73\sqrt{3}\approx -126.439708953
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-9\times 7\sqrt{3}-10\sqrt{3}
Factor 147=7^{2}\times 3. Rewrite the square root of the product \sqrt{7^{2}\times 3} as the product of square roots \sqrt{7^{2}}\sqrt{3}. Take the square root of 7^{2}.
-63\sqrt{3}-10\sqrt{3}
Multiply -9 and 7 to get -63.
-73\sqrt{3}
Combine -63\sqrt{3} and -10\sqrt{3} to get -73\sqrt{3}.
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