Prerequisite Skills VOCABULARY CHECK Copy and complete the statement. ? Terms that have the same variable part are called 1. like terms ANSWER zero ANSWER.

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Prerequisite Skills VOCABULARY CHECK Copy and complete the statement. ? Terms that have the same variable part are called 1. like terms ANSWER zero ANSWER 2. For a function f(x), a(n) is an x- value for which f(x) = 0. ?

3. 121, 77 Prerequisite Skills SKILLS CHECK Find the greatest common factor of the pair of numbers , , , ANSWER 32 ANSWER 3 4

7. 3x +(– 6x) Prerequisite Skills SKILL CHECK Simplify the expression x + 2 –3x ANSWER 4x + 7 ANSWER 9. 4(2x – 1) + x 9x – 4 ANSWER 10. – (x + 4) – 6x – 7x – 4 ANSWER

Prerequisite Skills SKILL CHECK Simplify the expression. 13. (x 5 ) (– x) (3xy) 3 27x 3 y 3 ANSWER 12. xy 2 xy 3 x2y5x2y5 ANSWER x 15 ANSWER –x3–x3