Question

Rationalize the denominator 1/7+3√2

Answer 1

I hope this is correct

Answer 2

Answer:

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$\frac{1}{7 + 3 \sqrt{2} }$

$= \: \frac{1}{7 + 3 \sqrt{2} } \: \: \binom{7 - 3 \sqrt{3} }{7 - 3 \sqrt{2} }$

$= \: \frac{7 - 3 \sqrt{2} }{49 - 18} \:$

$= \: \frac{7 - 3 \sqrt{1} }{31}$

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