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Pearson Algebra 1 Common Core, 2011

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Pearson Algebra 1 Common Core, 2011 View details

1. Adding and Subtracting Polynomials

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Exercise 32 Page 490

Remember, only like terms can be combined.

7k^2+2k-4

Practice makes perfect

The first step in simplifying this expression is to identify which, if any, terms can be combined. Remember, only like terms — constant terms or terms with the same variable and the same exponent — can be combined. 2k^2 - k + 3 + 5k^2 + 3k - 7 In this case, we have two k^2-terms, two k-terms and two constants. All terms can be combined, so to simplify the expression we will rearrange it according to the Commutative Property of Addition and then combine like terms.

2k^2-k+3+5k^2+3k-7

CommutativePropAdd

Commutative Property of Addition

2k^2+5k^2+3k-k+3-7

Add and subtract terms

7k^2+2k-4

Subchapter links

Lesson Check p.489

Practice and Problem-Solving Exercises p.489-491

Standardized Test Prep p.491

Mixed Review p.491