Question

Rationalise denominator 5/2+√3

Answer 1

Answer:

5/2+√3

5/2-√3

Step-by-step explanation:

Just Change + to -

or if it is in - change it to +

Answer 2

Answer:

10 - 5 root 3

Step-by-step explanation:

Refer to the attachment if not able to understand text.

To rationalise the denominator, we need to multiply the denominator's inverse sign in both the numerator as well as the denominator.

= 5 / 2 + root 3 × 2 - root 3 / 2 - root 3

= 10 - 5 root 3 / (2)² - ( root 3 )²

= 10 - 5 root 3 / 4 - 3

= 10 - 5 root 3 / 1

= 10 - 5 root 3

Here, identity used is a² - b², that is equal to ( a + b )(a - b).