### Home > MC2 > Chapter 5 > Lesson 5.2.1 > Problem 5-45

5-45.

Write the expression shown on each of the Expression Mats below, then simplify them by making zeros and combining like terms. 5-45a HW eTool (CPM) and 5-45b HW eTool (CPM). Homework Help ✎

Notice that a grey tile and a white tile of the same value cancel each other out and make a zero.

Now write an expression for the values that remain.

−2

See part (a).

2*x*^{2} + 3*x* − 1

Use the eTool below to solve part (a).

Click the link at right for the full version of the eTool: MC2 5-45a HW eTool

Use the eTool below to solve part (b).

Click the link at right for the full version of the eTool: MC2 5-45b HW eTool