Question: Factor the following if possible.
$x^2 + 25x + 144$
1. **State the problem:** Factor the trinomial $$x^2 + 25x + 144$$ if possible.
2. **Recall the factoring formula:** For a trinomial of the form $$x^2 + bx + c$$, we look for two numbers that multiply to $$c$$ and add to $$b$$.
3. **Identify values:** Here, $$b = 25$$ and $$c = 144$$.
4. **Find factors of 144 that add to 25:** The pairs of factors of 144 are:
- 1 and 144 (sum 145)
- 2 and 72 (sum 74)
- 3 and 48 (sum 51)
- 4 and 36 (sum 40)
- 6 and 24 (sum 30)
- 8 and 18 (sum 26)
- 9 and 16 (sum 25)
5. Since $$9 + 16 = 25$$, these are the numbers we need.
6. **Write the factorization:**
$$
x^2 + 25x + 144 = (x + 9)(x + 16)
$$
7. **Check the options:** The options given are:
- $$(x - 9)(x + 16)$$
- $$(x - 16)(x - 9)$$
Neither matches the correct factorization $$(x + 9)(x + 16)$$.
8. **Conclusion:** The trinomial factors as $$(x + 9)(x + 16)$$, which is not listed among the options provided.
**Final answer:** The correct factorization is $$(x + 9)(x + 16)$$, which is not among the given choices.