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Suppose you are using algebra tiles to represent each expression below. How many unit tiles would you need to add to build a perfect square?

  1. Large square, with 1 x squared tile aligned in the upper left corner, 5 vertical x tiles to the right of the x squared tile, 5 horizontal x tiles below the x squared tile, all aligned  on the left & top, and a squared, outlined in red. labeled, how many unit tiles would fit in this space?

  1. tiles