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DO NOW Evaluate the following and find the absolute value. Then identify whether your solution is a prime or composite number. If it is composite, find the prime factorization: 1. |-3| 2. |-5 + 20| 3. |6-7| Pop Notebook Quiz! 1) What does it mean to say 4 is a factor of 16? 2) What components make up an expression? 3) How is an expression different from an equation? 4) In the chart we made on types of numbers, what type of numbers were included in the inner most circle? 5) What are the steps (name at least 3) to evaluating the prime factorization of a number. Greatest Common Factor • Find the biggest number you can think of that goes in evenly to both: 16 15 9 and and and ??? 36 45 22 Cornell Notes • Greatest Common Factor Ex: 24 and 36 • the largest integer that divides without remainder into a set of integers -The biggest number that goes in evenly to both 24 and 36 is 12. Cornell Notes • Factoring Expressions • Use prime factorization to determine a product of primes for coefficients • Write out each variable in the expression Ex: 16x²y² 2*2*2*2*x*x*y*y Cornell Notes • GCF of expressions • Same as GCF of numbers! Ex: 16x²y and 24xy -The GCF of 16 and 24 is 8 -The GCF of x²y and xy is xy -The total GCF is 8xy Practice-3 Tasks 1) With partner: Create 15 sets of numbers and find GCF-quiz each other! a. 5 pairs of numbers b. 5 triples c. 5 quadruples 2) Factor the expressions on the board 3) Find the GCF of the expressions on the board