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What is a Polynomial?
Definition: Polynomial
Summary
- A monomial is a number, a variable, or a product of both
- 'Product' means multiplication
- 'Sum' means addition
- A monomial has 1 term
- A binomial has 2 terms
- A trinomial has 3 terms
- 4xx has 1 term, 4x4, so it is a monomial
- 4xx+7 has 2 terms, 4x4 and 7, so it is a binomial
- 4xx+7-5az3 has 3 terms, 4x4, 7, and 5az3, so it is a trinomial
- If we have more than 3 terms, it's just called a polynomial

Notes
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- A monomial is a number, a variable, or a product of both
- 'Product' means multiplication
- 'Sum' means addition
- So in a polynomial, we are adding one or more terms
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- Terms are the parts of an expression that are separated by addition or subtraction
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- A monomial is a number, a variable, or a product of both
- 'Product' means multiplication
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- A binomial is two monomials added together
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- A trinomial is three monomials added together
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- A monomial is a number, a variable, or a product of both
- 'Product' means multiplication
-
- A monomial is a number, a variable, or a product of both
- 'Product' means multiplication
-
- A monomial is a number, a variable, or a product of both
- 4xx is the product of a number, 4, and a variable, x4
- So 4x4 is a monomial
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- 7 is another monomial, because it's just a number
- So if we add that to 4x4, we have two monomials added together
- So 4x4+7 is a binomial
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- Three monomials added together is called a trinomial
- So 4x4+7+-5az3 is a trinomial
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- Once you get past three, there are no more special names!
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- A monomial has 1 term
- A binomial has 2 terms
- A trinomial has 3 terms
- Any more than 3 terms, we just call it a polynomial