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5-113.

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

1. Remember that shaded tiles are positive and white tiles are negative.

$x-2x+2-3=-x-1$

1. $x+2x+x^2-1+1=x+x^2$

Use the eTool below to solve the problems in part a and b.
Click the link at right for the full version of the eTool: 5-113 HW eTool (CPM)