Resposta :

Eriivan
[tex](3 \sqrt{7} + \sqrt{2} )( \sqrt{7}+3 \sqrt{2} )\\3 \sqrt{49} +9 \sqrt{14} + \sqrt{14} +3 \sqrt{4}\\3.7+9 \sqrt{14} + \sqrt{14} +3.2\\21+9 \sqrt{14} + \sqrt{14} +6\\27+10 \sqrt{14} [/tex]

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