# What is a polynomial?

### What is a polynomial?

There are criteria for expressions to be called polynomials. A polynomial needs to have at last 3 algebraic terms. For instance, an expression with negative exponents is not a polynomial. In this lesson, we will also learn how to classify polynomials base on their number of terms.

#### Lessons

• 1.
Which of the following is a "Polynomial"?
a)
$6$
$\sqrt{3} x$
${x^ \frac{1}{3}}$
$4{b^3} - 5b$
$3x + \sqrt{4z}$
${x^{-4}} - 3y$
$\frac{2}{13x} + 4$

• 2.
Classifying polynomials (monomial, binomial, trinomial, or polynomial
a)
$x + 2$
$-3$
${x^3} -2x-4$
${x^3}-2 {x^2} +3 x-23$