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The Function

squareSum([])
squareSum(numbers)

/*
    Cubes all passed in numbers and sums them up
    Returns sum total
*/

squareSum([1, 2, 3]); 
// 14

squareSum([12, 5, 44]);
// 2105

Solution by - Need4Swede

How it works

function squareSum(numbers){

    // Initialize sum variable
    let sum = 0;
    
    // Cube every number passed in and add it to the sum total
    numbers.forEach(number => {
      number **= 2;
      sum += number;
    })
    
    // Return the sum total
    return sum;
}

Try it yourself - Codewars Source

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