$ P(x)$ is a quadratic trinomial. What maximum number of terms equal to the sum of the two preceding terms can occur in the sequence $ P(1)$, $ P(2)$, $ P(3)$, $ \dots?$

[i]Proposed by A. Golovanov[/i]
1. Let \( P(x) = ax^2 + bx + c \) be a quadratic polynomial. We need to find the maximum number of integers \( n \ge 2 \) such that \( P(n+1) = P(n) + P(n-1) \).

2. First, express \( P(n+1) \), \( P(n) \), and \( P(n-1) \):
   \[
   P(n+1) = a(n+1)^2 + b(n+1) + c = a(n^2 + 2n + 1) + b(n + 1) + c = an^2 + (2a + b)n + (a + b + c)
   \]
   \[
   P(n) = an^2 + bn + c
   \]
   \[
   P(n-1) = a(n-1)^2 + b(n-1) + c = a(n^2 - 2n + 1) + b(n - 1) + c = an^2 - 2an + a + bn - b + c
   \]

3. Set up the equation \( P(n+1) = P(n) + P(n-1) \):
   \[
   an^2 + (2a + b)n + (a + b + c) = an^2 + bn + c + an^2 - 2an + a + bn - b + c
   \]

4. Simplify the equation:
   \[
   an^2 + (2a + b)n + (a + b + c) = 2an^2 + (b - 2a + b)n + (a - b + 2c)
   \]
   \[
   an^2 + (2a + b)n + (a + b + c) = 2an^2 + (2b - 2a)n + (a - b + 2c)
   \]

5. Combine like terms and equate coefficients:
   \[
   an^2 + (2a + b)n + (a + b + c) = 2an^2 + (2b - 2a)n + (a - b + 2c)
   \]
   \[
   0 = an^2 + (b - 4a)n + (c - 2b)
   \]

6. This is a quadratic equation in \( n \):
   \[
   an^2 + (b - 4a)n + (c - 2b) = 0
   \]

7. A quadratic equation can have at most 2 distinct integer solutions. Therefore, the maximum number of terms \( n \ge 2 \) such that \( P(n+1) = P(n) + P(n-1) \) is 2.

8. To verify, consider the specific example \( P(x) = x^2 - x + 4 \):
   \[
   P(1) = 1^2 - 1 + 4 = 4
   \]
   \[
   P(2) = 2^2 - 2 + 4 = 6
   \]
   \[
   P(3) = 3^2 - 3 + 4 = 10
   \]
   \[
   P(4) = 4^2 - 4 + 4 = 16
   \]

9. Check the conditions:
   \[
   P(3) = P(2) + P(1) \implies 10 = 6 + 4
   \]
   \[
   P(4) = P(3) + P(2) \implies 16 = 10 + 6
   \]

10. Thus, the maximum number of terms that are equal to the sum of the two preceding terms is 2.

The final answer is \(\boxed{2}\).