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McGraw Hill Integrated II, 2012

MH

McGraw Hill Integrated II, 2012 View details

1. Adding and Subtracting Polynomials

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Exercise 66 Page 13

Remember, only like terms can be combined.

C

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 — can be combined. x+( x + 1)+( x + 2) In this case, we have three x-terms and two constants. Both the x-terms and constants can be combined, so to simplify the expression we will rearrange it according to the Commutative Property of Addition and then combine like terms.

x+(x+1)+(x+2)

Remove parentheses

x+x+1+x+2

CommutativePropAdd

Commutative Property of Addition

x+x+x+1+2

Add terms

3x+3

Therefore, the correct option is C.

Subchapter links

Exercises p.10-13