Find the degree of the polynomial p(x) = x^3 + 2x + 1 (ignore any non-polynomial fragments in the original text).

Introduction / Context:
The question asks for the degree of a polynomial. The degree is the highest power of x with a nonzero coefficient in a valid polynomial expression.

Given Data / Assumptions:

• Polynomial: p(x) = x^3 + 2x + 1.
• We disregard any stray non-polynomial expression (like 1/x) from the corrupted prompt, following recovery-first policy.

Concept / Approach:
A polynomial in x has nonnegative integer exponents only. The degree equals the largest such exponent appearing with a nonzero coefficient.

Step-by-Step Solution:

Verification / Alternative check:
No term has a higher exponent than 3, and all terms have valid nonnegative integer exponents; thus the degree is 3.

Why Other Options Are Wrong:
2 and 1 would ignore the x^3 term; 4 or 5 invent higher exponents not present in the polynomial.

Common Pitfalls:
Being misled by an extraneous “1/x” fragment, which would make the expression non-polynomial; confusing the number of terms with degree; overlooking the highest power term.

Final Answer:
3