Evaluate
10\sqrt{3}+28\approx 45.320508076
Factor
2 {(5 \sqrt{3} + 14)} = 45.320508076
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\left(\sqrt{3}+5\right)^{2}
Multiply \sqrt{3}+5 and \sqrt{3}+5 to get \left(\sqrt{3}+5\right)^{2}.
\left(\sqrt{3}\right)^{2}+10\sqrt{3}+25
Use binomial theorem \left(a+b\right)^{2}=a^{2}+2ab+b^{2} to expand \left(\sqrt{3}+5\right)^{2}.
3+10\sqrt{3}+25
The square of \sqrt{3} is 3.
28+10\sqrt{3}
Add 3 and 25 to get 28.
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