Question

Write the rationalizing factor of 1 by root 7- root 4​

Answer 1

root 7 + root 4 is the rationalizing factor

Answer 2

Answer:

Rationalizing factor of 1/root7-root4 is root7+root4 so divide and multiply by it

And the formula used there in the second step denominator is a^2-b^2=(a+b)(a-b)