Question

Please explain this maths problem. I don't know how there additional square roots came in the numerator and denominator.

Answer 1

Answer:

Step-by-step explanation:

They are multiplying the numerator and denominator with √5 to make the denominator a rational number

Answer 2

Answer:

Step-by-step explanation:

Multiplying the numerator and denominator by same number won’t change the fraction. In order to remove the sqrt symbol from the denominator, multiplied by sqrt(5)