Question

Rationalise :
1
_________
√5 - √2 - 1

Answer 1

Answer:

We use the identity (a+

b

)(a−

b

)=a

2

−b.

Multiply and divide

7

−2

1

by

7

+2 to get

7

−2

1

×

7

+2

7

+2

=

7−4

7

+2

=

3

7

+2

Hence, option A.

Answer 2

Answer:

0.17814558487

Step-by-step explanation:

here is ur answer hope u understood