1. **State the problem:** Factor the quadratic polynomial $$-x^2 - 22x - 121$$ or determine if it is prime.
2. **Rewrite the polynomial:** To factor more easily, factor out the negative sign:
$$-x^2 - 22x - 121 = -(x^2 + 22x + 121)$$
3. **Check if the quadratic inside the parentheses can be factored:**
We look for two numbers that multiply to $$121$$ and add to $$22$$.
4. **Factorization check:**
Since $$121 = 11 \times 11$$ and $$11 + 11 = 22$$, the quadratic factors as:
$$x^2 + 22x + 121 = (x + 11)(x + 11) = (x + 11)^2$$
5. **Write the final factorization:**
$$-x^2 - 22x - 121 = -(x + 11)^2$$
**Answer:** The polynomial factors as $$-(x + 11)^2$$, so it is not prime.
Factor Quadratic E663A2
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