Question

rationalize the denominator of 1/√7-2​

Answer 1

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Answer 2

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$\frac{ \: \: \: 1}{ \sqrt{7} - 2 } \times \frac{ \sqrt{7} + 2 }{ \sqrt{7} + 2}$

$\frac{ \sqrt{7} + 2 }{√7 {}^{2} - 2 {}^{2} }$

$\frac{ \sqrt{7} + 2}{7 - 4}$

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

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