Nice. A comment for the concept though. Say for the case of completing the square of x^2 - 2x, there is no need to place the (-1) tile at the last step. This is because, x^2 -2x is made up of (x -1)^2 and the jutting out (-1) tile. i.e. x^2 - 2x = (x -1)^2 - 1.
Nice. A comment for the concept though. Say for the case of completing the square of x^2 - 2x, there is no need to place the (-1) tile at the last step. This is because, x^2 -2x is made up of (x -1)^2 and the jutting out (-1) tile. i.e. x^2 - 2x = (x -1)^2 - 1.
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