Return Early Pattern for Functions. Please Help!

Tell us what’s happening:
So, I don’t think this should be that complicated. I used “a < 0 || b < 0” instead of “a || b < 0” to be extra specific, and kept “undefined” as a keyword and not a string like the directions said. What am I missing?

Your code so far

// Setup
function abTest(a, b) {
  // Only change code below this line
  if ("a < 0 || 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

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Link to the challenge:

The last thing is… when you put something inside quotes, that is a string, it is not evaluated anymore. As that is a string, a and b are not actually being checked