**Tell us what’s happening:**

Having trouble understanding/making this lesson :3 can someone give a hint our explanation what to do?

**Your code so far**

```
// Setup
function abTest(a, b) {
// Only change code below this line
if (a <= 0) {
return = "undefined";
}
else (b <= 0) {
return = "undefined";
}
// Only change code above this line
return Math.round(Math.pow(Math.sqrt(a) + Math.sqrt(b), 2));
}
// Change values below to test your code
abTest(2,2);
```

**Your browser information:**

User Agent is: `Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/13.0.2 Safari/605.1.15`

.

**Link to the challenge:**

https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/basic-javascript/return-early-pattern-for-functions/