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ch each addition problem with its sum. Use the
ebra tiles if needed.
(2x2
-
x) + (x² + 3x − 1)
-
5x² + 2x − 1 + (4x²
1+
-x+2)
(3x² + 2x + 1) + (x² − 1)
-
-x² - 1 + (4x² - x)
:: 9x² + x + 1
:: 4x²+2x
:: 3x²
-
X
- 1
3x² + 2x 1

ch each addition problem with its sum Use the ebra tiles if needed 2x2 x x 3x 1 5x 2x 1 4x 1 x2 3x 2x 1 x 1 x 1 4x x 9x x 1 4x2x 3x X 1 3x 2x 1 class=


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