Question 442439
OK
(1)/ (x-1) + (1)/ (2) = (2) / (x^2 -1)
x=-3
check
1/-4+1/2=2/8
1/4=1/4
ok

1/(x-1) + 1/2 = 2/(x^2 -1)
1/(x-1) + 1/2 = 2/(x-1)*(x+1)