Lesson 4-3 Pages 159-163 Prime Factorization Lesson Check 4-2.

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Lesson 4-3 Pages Prime Factorization Lesson Check 4-2

What you will learn! 1. How to write the prime factorization of composite numbers. 2. How to factor monomials.

Prime number Composite number Prime factorization Factor tree Factor

What you really need to know! A prime number is a whole number that has exactly two factors, 1 and itself. A composite number is a whole number that has more than two factors. Zero and 1 are neither prime nor composite.

What you really need to know! Any composite number can be written as a product of prime numbers. A factor tree can be used to find the prime factorization.

What you really need to know! In algebra, monomials can be factored as a product of prime numbers and variables with no exponents greater than 1. 8x 2 = 222xx

Example 1: Determine whether the number is prime or composite: 31 Factors 1 31 Prime!

Example 2: Determine whether the number is prime or composite: Composite!

Example 3: Write the prime factorization of 56.

Example 4: Factor the monomial: 16p 2 q 4

Example 4: Factor the monomial: 16p 2 q ppqqqq

Example 4: Factor the monomial: -21x 2 y -137xxy

Page 162 Guided Practice #’s 4-13

Pages with someone at home and study examples! Read:

Homework: Pages #’s even #’s Lesson Check 4-3

Page 731 Lesson 4-3

Lesson Check 4-3