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2-21.

Use the tiles in the eTool below to write the algebraic expression.
Click the link at right for the full version of the eTool: AC 2-21 HW eTool

To solve this problem, you will need to group the shapes by their area. How many x-tiles are there? x2-tiles? Count the number of each different area.

6x2 + 4x + 3xy + 6y + y2