Question

rationalising factor of 3root7+5 is

Answer 1

no. given

3✓7+5

explanation

3✓7+3 =(3^2✓7^2 - 5^2

63-25

=18

18 is a rational number. Therefore,3✓7-5 is

rationalisation factor.

answer

The rationalisation factor of 3✓7+5 is

3^2✓7^2-5^2

hope it will help you