Question

3+root7 by 3-4 root7 =a+b root7

Answer 1

$\frac{3 + \sqrt{7} }{3 - 4 \sqrt{7} } = a + b \sqrt{7}$

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$\frac{3 + \sqrt{7} }{3 - 4 \sqrt{7} } = a + b \sqrt{7} \\ \frac{(3 - \sqrt{7})(3 + 4\sqrt{7}) }{ - 103} = a + b \sqrt{7}$