Monomial is a polynomial with one term. Ex. -4x; 2; 2/3y; -x/3
Binomial is a polynomial with two terms, when simplified. The terms are separated by a minus (-) or a plus(+) sign. Examples:
3x²y + 3y - 2y (this is not binomial, must be simplified)
3x²y + y (this is binomial, simplified)
-x/3 + 5
xy³ - y
5x²yz³ + 7b
Trinomial is a polynomial with three terms, when simplified, separated by a plus (+) or minus (-) between consecutive terms. Examples:
3xy + 2xy - y + 6 (this is not trinomial, must be simplified)
5xy - y + 6 (this is trinomial, simplified)
3yz³ + 3y + 4
-x² + 4y + z
