Often I had trouble deciding if I should complete the square or just use the opposite b over 2a formula. I usually went with the latter, but only did so if I did not have the time. Also, when I was working on a Farmer Ted problem, I forgot to take away one side of the rectangle, and I had to do the entire problem again. Altogether, this unit seemed to be more of a trap of sorts, but it was not as difficult as I had presumed.
It wasn't meant to be a trap...sorry you felt that way!
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