Math

x/(x^2-16)-6/(x^2+5x+4)

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  1. Find the common denominator and add:
    x/(x^2-16)-6/(x^2+5x+4)
    =x/((x+4)(x-4)) - 6/((x+4)(x+1))
    =[x(x+1)-6(x-4)]/[(x+4)(x-4)(x+1)]
    =[x²-5x+24]/[(x+4)(x-4)(x+1)]
    The numerator cannot be factored.

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