Question

hii...pls...answer and explain also.....

Answer 1

Answer:

(i) 5 + 2root 3

Step-by-step explanation:

5 - 2root 3 ☓ 5 +2 root 3

= 5^2 - (2root 3)^2

Using identity a^2 - b^2 = (a+b) (a-b)

= 25 - 12

= 13

Since 13 is rational. Therefore 5 + 2 root3 is the rationalizing factor.

Answer 2

rationalising factor of the given equation is 5 +2√3....
this is because it is conjugate ( having opposite sign between both the terms ) of the given equation....

hope it helps. :-)