Trinomial

A trinomial is a polynomial with exactly three terms, which are combined by addition or subtraction. Below are some examples of trinomials. 6x-2y+7z, 3x^3+4x^2-1 Notice that a polynomial is a trinomial only if it cannot be simplified to have less than three terms. For example, the following polynomial is not a trinomial but a binomial. 2x-15y+ 5x=7x-15y