Question

Rationalise 3 + root7 / 3 - 4 root7​

Answer 1

Answer:

3+√7-4√7=3+√7/3+√7

and then calculate

by using identities

Answer 2

Answer:

-(37+15root7/103)

Step-by-step explanation:

(3+root7/3-4root7) (3+4root7/3+4root7)

(9+12root7+3root7+28)/ (9-112)

-(37+15root7/103)