Solve for x
x=2\sqrt{5}-3\approx 1.472135955
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x+3=2\sqrt{5}
Factor 20=2^{2}\times 5. Rewrite the square root of the product \sqrt{2^{2}\times 5} as the product of square roots \sqrt{2^{2}}\sqrt{5}. Take the square root of 2^{2}.
x=2\sqrt{5}-3
Subtract 3 from both sides.
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