Evaluate
2\sqrt{2}+2\approx 4.828427125
Factor
2 {(\sqrt{2} + 1)} = 4.828427125
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\left(\sqrt{2}\right)^{2}+2\sqrt{2}
Use the distributive property to multiply \sqrt{2} by \sqrt{2}+2.
2+2\sqrt{2}
The square of \sqrt{2} is 2.
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