"This assignment involves writing a program that will factor a binomial of the form ax + b.  For example:  

6x + 18 = 6(x + 3)
            4x - 10 = 2(2x - 5)
            -30x + 15 = -15(2x + 1)"
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I'm being told to use a char declaration in order to tell what the variable is.  Problem is, the teacher never tells us how to do these things, nor does he know himself, I think.