Question

2. Rationalise the denominator of V5 ​

Answer 1

Answer:

In the given question

5

+

2

1

Onrationalisingthenumber

=

5

+

2

1

×

5

−

2

5

−

2

Onapplying(a+b)(a−b)=a

2

−b

2

=

5

2

−

2

2

5

−

2

=

5−2

5

−

2

=

3

5

−

2