Algebra I - Chapter 4

4.1 Exponents

Exponents

N 4 = Remember that the power just deals with the variable in front of

it.

MN2

(MN)2

Let’s Try Some:• Evaluate if a = 3 and b = -2

ab – a2

a3 + 2b3

Vocabulary:• A monomial is an expression that is a number, a

variable, or the product of a number and one or more variables

They cannot contain variables in denominators,variables with exponents that are negative, or variables under radicals

• Constants are monomials that contain no variables

• The numerical factor of a monomial is the coefficient of the variable

More Vocabulary:A Polynomial is a monomial or a sum of monomials

The monomials that make up a polynomial are called the terms of the polynomial

Like terms are the ones that can be combined

Vocabulary:• The degree of a monomial is the sum of the

exponents of it variables – the degree of a constant is zero

Even More Vocab!• Binomials (two terms)

• Trinomial (three terms)

• The degree is the degree of the monomial with the greatest degree

Tonight’s Homework:

Page 144 (24-31)(40-43)Vocab Quiz next class – 4.1-4.2