The act of "completing the square" involves taking half the coefficient of x in the quadratic x2 + ax and adding its square. But many students do not understand why this process works. This interactive geometric proof shows…
The buttons are meant to be used sequentially, and will
appear in the order they are meant to be pressed.
press buttons before all movements are complete.
The Reset button
can be used at any time to start the demonstration over.
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