13 are monomials since they can be written as
13x0 = 13•1 = 13
where the variable is x0.
The ending of these words "nomial"
is Greek for "part".
is the product of non-negative integer powers of variables.
Consequently, a monomial has NO variable in its
It has one term. (mono implies one)
-57, x², 4y², -2xy, or
(notice: no negative exponents, no fractional
binomial is the sum of two
monomials. It has two unlike terms.
(bi implies two)
3x + 1, x²
- 4x, 2x + y, or
y - y²
is the sum of three monomials. It has three unlike terms.
(tri implies three)
+ 2x + 1, 3x² - 4x
+ 10, 2x + 3y + 2
is the sum of one or more terms. (poly implies many)
+ 2x, 3x3
+ x² + 5x + 6, 4x
- 6y + 8