Arguments optinal challenge assist

JavaScript
#1

My program returns the correct results but does not pass one item on the checklist
What is the problem in my code?

function addTogether(x, y, z) {
  let args = [...arguments]; 
  if (args.every(num => typeof num === "number")) { 
    return x && y ? x + y : x && !y ? z => z + x : undefined;    
  }
}

let sumTwoAnd = addTogether(2); 
console.log(addTogether(2, [3])); 
console.log(sumTwoAnd(3)); 
console.log(addTogether(2)(3));

// running tests

addTogether(2)([3])

should return undefined.
// tests completed
// console output
undefined
5
5

#2

Your code does not return the correct results. addTogether(2)([3]) returns 32.

#3

Ok thank you very much @ArielLeslie
I will keep working on it

#4

Happy coding! Don’t be shy about asking questions if you get stuck. :smiley:

#5