# Vocabulary chp 5

## 20 terms

### Binomial -

A polynomial that has 2 unliketerms

### Coefficient -

The numerical factor of a monomial

### Complex Conjugates-

Two complex numbers of the form a + bi and a - bi

### Complex number-

Any number that can be written in the form of a + bi, a and b are real numbers and i is the imaginary unit

### Degree-

The sum of the exponents of the variable of a monomial

### Extraneous Solution-

A number that does not satisfy the original equation

### FOIL method-

The product of 2 binomials is the sum of the products F(first terms) O(Outer terms) I (Inner terms) L (Last terms)

### Imaginary Unit-

i, or the principal square root of -1

Two radical expressions in which both the radicands and indicies are alike

### Like Terms-

Monomials that can be combined

### Monomial-

An expression that is a number, a variable, or the product of a number and one or more variables

### Nth Root-

For any real numbers a and b, and any positive integer n, if a^n= b, then a is an nth root

### Polynomial-

A monomial or a sum of monomials

### Power

- An expression of the form x^n

### Principal Root-

The nonnegative root

### Pure Imaginary Number-

The square roots of negative real numbers. For any positive real number b, √(-b^2 )= √(b^2 ) * √(-1) or bi