#### description

- Monomial, Binomial, Trinomial, Polynomial.

#### notes

Expression that contains only one term is called a **monomial**.

For example : `4x^2, 3xy, –7z, 5xy^2, 10y, –9, 82mnp`, etc.

Expression that contains two terms is called a **binomial**.

For Example : `a + b, 4l + 5m, a + 4, 5 –3xy, z^2 – 4y^2, etc.

An expression containing three terms is a **trinomial**.

For example : a + b + c, 2x + 3y – 5, `x^2y` – `xy^2` + `y^2`, etc.

In general, an expression containing, one or more terms with non-zero coefficient (with variables having non negative integers as exponents) is called a **polynomial**.

A polynomial may contain any number of terms, one or more than one.

For example : a + b + c + d, 3xy, 7xyz – 10, 2x + 3y + 7z, etc.

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