👉 Trapezoidal refers to a type of quadratic equation, which is a polynomial function that has an odd number of terms. This means that each term in the polynomial is either 1 or -1, with the exception of the last term, which may be zero if there are no other terms remaining after combining like terms. For example, consider the polynomial: f(x) = x^2 + 5x - 6 This polynomial has four terms: one positive and three negative.