Degree: the value of the highest exponent in the expression
Binomial: a polynomial with two terms
Trinomial: a polynomial with three terms
Polynomial: an expression, normally used to classify ones with more than three terms
[tex]x^2 + 5[/tex]
[tex]binomial[/tex]
[tex]degree: 2[/tex]
[tex]4x^3 + 5x + 9[/tex]
[tex]trinomial[/tex]
[tex]degree: 3[/tex]
[tex]5x^7 + 7x^4 + 8x^3 +9x^2 + 1[/tex]
[tex]polynomial[/tex]
[tex]degree: 7[/tex]