Question

Root 7 -1/root 7+1=a+d root 7

Answer 1

(√7 -1)/(√7 +1)=

(√7-1)(√7-1)/(√7+1)(√7-1)=

(7+1-2√7)/(7-1)

(8-2√7)/6

=> 4/3 -√7/3=(4/3)+(-1/3).√7