Evaluate
7-4\sqrt{3}\approx 0.07179677
Expand
7-4\sqrt{3}
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\left(\sqrt{3}\right)^{2}-4\sqrt{3}+4
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(\sqrt{3}-2\right)^{2}.
3-4\sqrt{3}+4
The square of \sqrt{3} is 3.
7-4\sqrt{3}
Add 3 and 4 to get 7.
\left(\sqrt{3}\right)^{2}-4\sqrt{3}+4
Use binomial theorem \left(a-b\right)^{2}=a^{2}-2ab+b^{2} to expand \left(\sqrt{3}-2\right)^{2}.
3-4\sqrt{3}+4
The square of \sqrt{3} is 3.
7-4\sqrt{3}
Add 3 and 4 to get 7.
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