Question 246155
 2- (a-4/a+4)=(a^2-8/a+4)
2(a+4)-(a-4)=a^2-8 multiply each side by a+4
2a+8-a+4=a^2-8
a+12=a^2-8
a^2-a-20=0 Subtract the left side from the right.
(a-5)(a+4)=0
a=5 (a cannot equal -4 because there would be division by zero which is not allowed).
.
Ed