Question

rationalise the denominator​

Answer 1

Answer:

5/root7-root2 * root7+root2/root7+root2

=5(root7+root2) / (root7)^2 - (root2)^2

=5(root7+root2) / 5

=root7+root2 / 1

Answer 2

Step-by-step explanation:

hope this helps. use this method as this will help you solve many questions