Question

To rationalise the denominator of 1/ root a+b

Answer 1

Answer:

1/√a+b

= a-b/a^2-b^2

= a-b/(a+b)x(a-b)

1/a-b * a+b/a-b

= a+b/(a-b)^2

Step-by-step explanation:

1- rationalised denominator by a-b

2- using identity a^2-b^2

Answer 2

Answer:

1/√a+b

= a-b/a^2-b^2

= a-b/(a+b)x(a-b)

1/a-b * a+b/a-b

= a+b/(a-b)^2