Algebra-1

A polynomial is an expression consisting of variables raised to whole-number powers and combined using addition, subtraction, and multiplication.

Option A: 2x³ + 5x − 7 is a polynomial. It includes terms where the variable x is raised to non-negative integer powers (3 and 1) and combined using addition and subtraction.

Option B:  is not a polynomial because it involves division by x, which makes it a rational function, not a polynomial.

Option C: