You are returning multiple operations, that’s not how you go about it. First try to solve the problem using regular if else statement block. When you do, try tu re-write your logic using the ternary operator, take a good look at the example showed in the challenge.
Once you have the logic straightened out, you will also need to change the strings you are using. The tests are looking for “positive”, “negative” (check your spelling!) and “zero” and are case-sensitive.