An expression consisting of two terms connected by the sign plus (+) or minus (-); as, a + b, or 7 - 3.

Consisting of two terms; pertaining to binomials; as, a binomial root.

Having two names; -- used of the system by which every animal and plant receives two names, the one indicating the genus, the other the species, to which it belongs.

event with only two possible outcomes.

a quantity expressed as a sum or difference of two terms

relating to binomials; "binomial expression"

a mathematical expression shown as one quantity written above another quantity, enclosed within enlarged parenthesis

a Difference of Cubes if both terms are perfect cubes

a Difference of Squares if both terms are perfect squares

a Sum of Cubes if both terms are perfect cubes