If a=2−√52+√5 and b=2+√52−√5, then (a+b)2=_______.

1.	If a=2−√52+√5 and b=2+√52−√5, then (a+b)2=_______.
Answer» $If a = \frac{2 - \sqrt{5}}{2 + \sqrt{5}}$ and $b = \frac{2 + \sqrt{5}}{2 - \sqrt{5}}$ , then $(a + b)^{2} =$ _______.

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