A binomial expression is an expression consisting of two terms.Example:5a+2b . . . A+
8a+2b
-2a plus 3b
6b+5a-4b+3a= ? Rearrange it as 5a+3a+6b-4b = 8a+2b
5a(a+2b+b²)
4a + 3c - 2b - c + a - b = 5a - 3b + 2c
5a + 4b - 3a =(5a - 3a) + 4b =2a + 4b =2 (a + 2b)
It is an algabraic expession without knowing whether or not 2b and 3a are plus or minus
Whan a = 2 and b = 6, 5a + 2b = 5*2 + 2*6 = 10 + 12 = 22
2a
5a plus 2b
a-2b is a binomial. It has two terms: a, and -2b.