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contextLimitedFactor.pl - Context file to check that the students answer agrees in form with a factored polynomial

Answers are first compared as usual, and if they agree, then bizarroArithmetic.pl turns on bizarro addition, subtraction, and division. This, for example, will cause (x+2)(x+1) to evaluate differently than x^2+2x+1.

The flag factorableObject defaults to 'polynomial', but it could be set to say, 'rational expression', etc. It is used in error messages.