Question

rationalise the denominator ​

Answer 1

Answer:

3+√7/3-4√7= (3+√7)/(3-4√7)× (3+4√7)/(3+4√7)

=( 9+3√7+12√7+4×7)/ (3)²-(4√7)²

=( 37+15√7)/9-112

= (37+15√7)/-103

= -37-15√7/103