Evaluate
\sqrt{15}\left(\sqrt{6}+2\right)\approx 17.232799673
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2\sqrt{15}+\sqrt{15}\sqrt{6}
Use the distributive property to multiply \sqrt{15} by 2+\sqrt{6}.
2\sqrt{15}+\sqrt{90}
To multiply \sqrt{15} and \sqrt{6}, multiply the numbers under the square root.
2\sqrt{15}+3\sqrt{10}
Factor 90=3^{2}\times 10. Rewrite the square root of the product \sqrt{3^{2}\times 10} as the product of square roots \sqrt{3^{2}}\sqrt{10}. Take the square root of 3^{2}.
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