CPM Homework Banner

Home > CC2MN > Chapter 4 > Lesson 4.3.3 > Problem 4-117

4-117.

Write the expression as shown on the Expression Mats, then simplify by making zeros and combining like terms.  

Shaded tile is plus 1. Tile is negative 1.

  1. Expression Mat with the following tiles in rows: Row 1: 1 positive, x, & 1 negative unit. Row 2: 1 negative, x, and 1 positive unit. Row 3: 1 negative, x, and 1 negative unit. Row 4: 1 positive unit, 1 negative unit.

  • Remove all zero pairs from the mat.

    How many of each tile are you left with?

  1. Expression Mat with the following tiles in rows: Row 1: 1 negative, x, & 1 positive, x squared. Row 2: 1 positive, x, and 1 positive unit. Row 3: 1 positive, x, and 1 negative unit.

    See part (a).

Use the eTool below to simplify the expressions.
Click the link at right for the full version of the eTool: 4-117 HW eTool 

© 2022 CPM Educational Program. All rights reserved.