Question

show that :(5+root2)(5,-root5)is a rational number

Answer 1

HEY MATE!

HERE IS YOUR ANSWER

(5 +root2)(5- root5)=5^2-root2^2=25-2=23

As 23 can be written as 23/1 i.e in the form of a/b , it is a rational number.

HOPE IT HELPED ☆☆

Answer 2

Answer:

Step-by-step explanation:is as shown in image.