Question

1/√7 -2 by rationalising the denominator

Answer 1

Answer:

Step-by-step explanation:

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Answer 2

$\frac{1}{ \sqrt{7-2}} × \frac{ \sqrt{7} + 2}{ \sqrt{7} + 2}$

$\frac{ \sqrt{7} + 2}{(7) {}^{2} - (2) {}^{2} }$

$\frac{ \sqrt{7} + 2}{47}$

Hope it helps