CPM Homework Help : AC Problem 2-59

Find a simplified algebraic expression for each Expression Mat below. 2-30a HW eTool (CPM), 2-30b HW eTool (CPM) and 2-30c HW eTool (CPM). Homework Help ✎ algebra tiles

Hint (a):

Determine the zero pairs and remove them. What is an expression for the remaining tiles?

Answer (a):

$2x−1$

Use the eTool below to find the simplified algebraic expression.
Click the link at right for the full version of the eTool: CC3 2-30a HW eTool

Hint (b):

On this mat, both $x$ -tiles in the (+) region can be removed, since they make a zero pair. Next, flip the $-1$ unit tile in the ( $-$ ) region to the ( $+$ ) region, and then simplify.

Use the eTool below to find the simplified algebraic expression.
Click the link at right for the full version of the eTool: CC3 2-30b HW eTool

Hint (c):

Unlike in parts (a) and (b), this problem has no zero pairs.
However, here is an un-simplified expression to get you started.

$x^2+(−1)+(−1)-(y+1+1)$
Can you simplify that expression?

Use the eTool below to find the simplified algebraic expression.
Click the link at right for the full version of the eTool: CC3 2-30c HW eTool