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Dimas [21]
3 years ago
7

\sqrt[]{2} ) {}^{2} " alt="(3 + \sqrt[]{2} ) {}^{2} " align="absmiddle" class="latex-formula">
​
Mathematics
1 answer:
Vesnalui [34]3 years ago
6 0

Answer:

11 + 6\sqrt{2}

Step-by-step explanation:

(3 + \sqrt{2} )²

= (3 + \sqrt{2} )( 3 + \sqrt{2} )

Each term in the second factor is multiplied by each term in the first factor

= 3( 3 + \sqrt{2} ) + \sqrt{2} ( 3 + \sqrt{2} )

Distribute each parenthesis noting that \sqrt{2} × \sqrt{2} = 2

= 9 + 3\sqrt{2} + 3\sqrt{2} + 2 ← collect like terms

= 11 + 6\sqrt{2}

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