It seems that your notation and expressions are a bit jumbled. I'll help you break them down step by step.
First, let's clarify what you have:
1. **Function**: \( f(x) = x^2 + 8x + 15 \)
2. Another expression: \( 8(x) = x + 5 \) - this looks like it might be a function notation that isn’t standard.
3. You have expressions involving \( F \) and \( g \), but they need clarification.
Let's start by analyzing \( f(x) \):
### Step 1: Factor \(