x^2-x-6/x^2-4=

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Originally Posted by mljerez x^2-x-6/x^2-4= start by factorizing both the denominator and numerator, note that the bottom is the difference of two squares (you remember how to do that, right?) now what?

x^2-x-6/x^2-4 =(x-3)(x+2)/(x-2)(x+2) (x-3)/(x-2)