Chapter 6
Creating More User-Friendly Algebraic Expressions
Algebraic expressions involve terms (separated by addition and subtraction) and factors (connected by multiplication and division). Part of the challenge of working with algebraic expressions is in using the correct rules: the order of operations, rules of exponents, distributing, and so on. Function notation helps simplify some expressions by providing a rule and inviting evaluation.
The Problems You'll Work On
In this chapter, you get to put some of those algebraic rules to practice with the following types of problems:
What to Watch Out For
Here are a few more things to keep in mind:
Adding and Subtracting Like Terms
251–258 Simplify by combining like terms.
251. 4a + 6a
252. 9xy + 4xy − 5xy
253. 5z − 3 − 2z + 7
254. 6y + 4 − 3 − 8y
255. 7a + 2b + ab − 3 + 4a − 2b − 5ab
256. 3x2 + 2x − 1 + 4x2 − 5x + 3
257. 9 − 3z
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