Question

(root 2 +1/root 2)^2​

Answer 1

Answer:

${( \sqrt{2} + \frac{1}{ \sqrt{2} } )}^{2} = \\ \\ { \sqrt{2} }^{2} + ( { \frac{1}{ \sqrt{2} } })^{2} + \sqrt{2} \times \frac{1}{ \sqrt{2} } \times 2 \\ \\ 2 + \frac{1}{2} + 2 = \frac{9}{2}$