jerrygerou

3/16/2018 - 9:37 PM

```
def difference_of_squares(n):
numbers = list(range(1, n+1))
square_of_sum = (sum(numbers) **2)
sum_of_squares = []
for n in numbers:
sum_of_squares.append(n **2)
sum_of_squares = sum(sum_of_squares)
return square_of_sum - sum_of_squares
```