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1.06 Evaluating Algebraic Expressions

Evaluate each expression using the indicated value for each variable. Show ALL your work.

If a = 3, b = 7, c = 2, then

Ex. 5 ∙ b – 6 ÷ c + a2

5 ∙ 7 – 6 ÷ 2 + 9 Evaluate 32 = 3 ∙ 3 = 9

35 – 6 ÷ 2 + 9 Multiply 1st since it comes first in the problem

35 – 3 + 9 Divide next because it comes next in PEMDAS

32 + 9 Subtract 1st since it comes first in the problem

41

Evaluate each expression when c = 5, a = 3, t = 7, and s = 5.

1. (c + 1)(c2 – c + 1)

     

2. c2 – (a3 – 4s)

     

3. [pic]

     

4. [t + 7(s – 3)]2 ÷ 3

     

5. (2c)2 + ts – 3a

     

Evaluate each expression when a = -1, b = 4, c = 6.

6. 4a + 9b – 2c

     

7. a – b + 5a – 2b

     

8. 8a + 5b – 11a – 7b

     

9. -10c + 3a + a

     

10. 3c2 + 2c + 2c2

     

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