Question 141320
True or false 
The polynomial 79xy is called a binomial.

<pre><font size = 4 color = "indigo"><b>
False.  That's a monomial because there is only
one term.  There are no additions or subtractions.

MONOmials have ONE term -- no additions or 
subtractions.
Examples:  {{{79xy}}} is a monomial, {{{5z}}} is a
monomial, {{{-6x^4y^2z^8}}} is a monomial,
{{{x}}} is a monomial, {{{3}}} is a monomial.

BInomials have TWO terms -- one addition or subtraction.
Examples: {{{2x+3y}}} is a binomial, {{{-6x^4y^3-7y^2z}}} is
a binomial, {{{x-1}}} is a binomial.

TRInomials have THREE terms -- two additions or subtractions.
Examples: {{{7x^2+3x-5}}} is a trinomial, {{{-3x^2y^6-27y^4z^3+3xyz}}} is
a trinomial, {{{-x-5-z}}} is a trinomial.

If a polynomial has four or more terms, we just call it
a "polynomial".

Edwin</pre>