Question

rationalise the denominator of this part​

Answer 1

Answer:

1÷√7+2. = 1÷ √9. = 1/3

hope you'll get it.....

Answer 2

Answer:

$\frac{1}{ \sqrt{7 + 2} } = \frac{1}{ \sqrt{9} }$

$= \frac{1}{3}$

so 1/3 is already a rational number