Polynomial equality refers to the comparison of two polynomials to determine if they are equal or not. Two polynomials are equal if and only if they have the same degree and the same coefficients for each term.
For example, the polynomials x^2 + 3x + 2 and x^2 + 3x + 2 are equal, since they have the same degree (2) and the same coefficients (1, 3, and 2) for each term. On the other hand, x^2 + 3x + 2 and x^2 + 4x + 2 are not equal, since they have different coefficients for the second term.