3 is a polynomial of which degree?

The number 3 is a polynomial of degree 0.

A polynomial is defined as an expression that consists of variables raised to non-negative integer powers, along with coefficients. In the case of the number 3, it can be thought of as a polynomial where the variable is not present. Mathematically, it can be expressed as:

3 = 3x⁰

Here, ‘x’ is the variable, and since the exponent is 0, we know that the degree of the polynomial is 0. Polynomials can have varying degrees, such as:

• Degree 0: c (where c is a constant, like 3).
• Degree 1: ax + b (where a and b are constants).
• Degree 2: ax² + bx + c (where a, b, and c are constants).

Thus, a constant like 3 is classified as a polynomial of degree 0.