Answer:
4-x^2/x^2
Step-by-step explanation:
x+1/x -1 - x - 1/x + 1 + 4/x^2 - 1
1/x - 1 - 1/x + 1 + 4/x^2 - 1
-1 + 1 + 4/x^2 - 1
4/x^2 - 1
4 - x^2/x^2
