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Home > CC2 > Chapter 9 > Lesson 9.1.3 > Problem 9-49

9-49.
  1. Simplify these expressions. Homework Help ✎

    1. (x + 3.5)2

    2. 23 + 5x − (7 + 2.5x)

    3. 3x + 4.4 − 2(6.6 + x)

2x + 7

Distribute the subtraction sign to the terms inside the parentheses, and then combine like terms. See part (c) for a worked example.

3x + 4.4 − 2(6.6 + x)

Remember to distribute the negative inside the parentheses.

3x + 4.4 − 13.2 − 2x

Combine like terms by adding or subtracting the constants.

x − 8.8