Completing the square is a way to represent part of a trinomial as a perfect square. Try to arrange the tiles in x²+ 6x as a perfect square. Start with the largest x² tile. Next add x tiles as evenly as possible around the x² tile. To complete the square, add 9 positive unit tiles. Since 9 positive units were added, remember to take away the same amount of unit tiles from the expression. So x²+ 6x can be expressed as (x + 3)² - 9.
Completing the Square using the Brainingcamp Algebra Tiles virtual manipulative.
Brainingcamp virtual manipulatives can be used anywhere with no setup, cleanup, or lost parts. They are highly effective at engaging today’s digital learners and helping them bringing abstract math concepts to life.
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