Question

simplify by rationalising denominator ​

Answer 1

Answer:

its  9/7

Step-by-step explanation:

Answer 2

Answer:

Step-by-step explanation:

3/√2 - 1

= 3(√2 +1 ) / (√2 - 1)(√2 + 1)                         (rationalising the denominators)

= 3√2 + 3/2-1                               (a-b)(a+b) = a^2-b^2.

= 3√2 +3      (Anwers)