Simplify: `(x^2-x+1)^2-\ (x^2+x+1)^2`

Explanation

To simplify the expression \((x^2 - x + 1)^2 - (x^2 + x + 1)^2\), we can use the difference of squares identity, which states that \(a^2 - b^2 = (a - b)(a + b)\). Here, we can let:

- \(a = (x^2 - x + 1)\)
- \(b = (x^2 + x + 1)\)

### Step 1: Identify \(a\) and \(b\)
We have:
- \(a = x^2 - x + 1\)
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