\left ( \sqrt{2}+\frac{1}{\sqrt{2}} \right )^{2}is equal to:

  • Option 1)

    2\frac{1}{2}

  • Option 2)

    2\frac{1}{5}

  • Option 3)

    4\frac{1}{2}

  • Option 4)

    5\frac{1}{2}

  • Option 5)

    3\frac{1}{2}

Answers (1)

By applying (a+b)^{2}=a^{2}+b^{2}+2ab

\rightarrow 4\frac{1}{2}

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