Can somelone plz solve and explain

function abTest(a, b) {
// Only change code below this line

// 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

we don’t know what you need to do (I imagine it is one of the challenges in freecodecamp, so the link there would be perfect)

Also, we will not solve it for you, show us what you have tried and we will give you pointers toward the right direction