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# Difference Of Squares
Welcome to Difference Of Squares on Exercism's Emacs Lisp Track.
If you need help running the tests or submitting your code, check out `HELP.md`.
## Instructions
Find the difference between the square of the sum and the sum of the squares of the first N natural numbers.
The square of the sum of the first ten natural numbers is
(1 + 2 + ... + 10)² = 55² = 3025.
The sum of the squares of the first ten natural numbers is
1² + 2² + ... + 10² = 385.
Hence the difference between the square of the sum of the first
ten natural numbers and the sum of the squares of the first ten
natural numbers is 3025 - 385 = 2640.
You are not expected to discover an efficient solution to this yourself from
first principles; research is allowed, indeed, encouraged. Finding the best
algorithm for the problem is a key skill in software engineering.
## Source
### Created by
- @canweriotnow
### Contributed to by
- @Scientifica96
- @vermiculus
- @yurrriq
### Based on
Problem 6 at Project Euler - http://projecteuler.net/problem=6
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