Question

help me to solve this problem​

Answer 1

Answer:

$\sqrt{3 - 2 \sqrt{2} } \\ = \sqrt{2 + 1 - 2 \sqrt{2} } \\ = \sqrt{2 - 2 \sqrt{2} + 1 } \\ = \sqrt{( \sqrt{2})^{2} - 2 \sqrt{2} + 1^{2} } \\ = \sqrt{( \sqrt{2} - 1) ^{2} } \\ = \sqrt{2} - 1 \\ hence \: option \: (a) \: is \: the \: correct \: answer.$