1. **State the problem:** Simplify the expression $$-2t + 7 - 5t^2 - 4t^2$$.
2. **Identify like terms:** The terms involving $$t^2$$ are $$-5t^2$$ and $$-4t^2$$.
3. **Combine like terms:**
$$-5t^2 - 4t^2 = -(5t^2 + 4t^2) = -9t^2$$
4. **Rewrite the expression:**
$$-9t^2 - 2t + 7$$
5. **Final simplified expression:**
$$\boxed{-9t^2 - 2t + 7}$$
This matches option A.
Simplify Expression 0C98E5
Step-by-step solutions with LaTeX - clean, fast, and student-friendly.