Trinomial

Trinomial expressions

1. 3 x + 5 y + 8 z with x , y , z variables
2. 3 t + 9 s 2 + 3 y 3 with t , s , y variables
3. 3 t s + 9 t + 5 s with t , s variables
4. A x a y b z c + B t + C s with x , y , z , t , s variables, a , b , c nonnegative integers and A , B , C any constants.
5. P x a + Q x b + R x c where x is variable and constants a , b , c are nonnegative integers and P , Q , R any constants.

Trinomial equation

A trinomial equation is a polynomial equation involving three terms. An example is the equation x = q + x m studied by Johann Heinrich Lambert in the 18th century.