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Numbers & Operations

Calculate:  ${\left(\sqrt{\mathrm{<mn>7</mn>}+\mathrm{<mrow><mn>3</mn><mo></mo><msqrt><mn>5</mn></msqrt></mrow>}}+\sqrt{\mathrm{<mn>7</mn>}-\mathrm{<mrow><mn>3</mn><mo></mo><msqrt><mn>5</mn></msqrt></mrow>}}\right)}^2$

$\mathrm{<mrow><mn>6</mn><mo></mo><msqrt><mn>5</mn></msqrt></mrow>}$

$\mathrm{<mn>18</mn>}$

$\mathrm{<mn>14</mn>}$

$\mathrm{<mn>4</mn>}$

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