Question

rationalize the denominator of root 2+1/ root 2-1​

Answer 1

2+1/2-1

3/1

3

That’s the answer no rationalising!

Answer 2

Answer:

$\frac{ \sqrt{2} + 1 }{ \sqrt{2} - 1} \times \frac{ \sqrt{2} + 1}{ \sqrt{2} + 1} = \frac{ { \sqrt{2} + 1 }^{2} }{ { \sqrt{2} }^{2} - {1}^{2} } = \frac{5 + 2 \sqrt{2} }{1} = 5 + 2 \sqrt{2}$