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Multiply. ( x^2+2 x-8)/( x^2-6 x+8) * ( x^2-3 x-4)/( x^2+9 x+20), x!=-4,2,-5

State the product in simplest form.

 ( x^2+2 x-8)/( x^2-6 x+8) * ( x^2-3 x-4)/( x^2+9 x+20)=

Enter the numerator and denominator separately in the boxes above. If the denominator is 1, enter the number 1. Do not leave either box blank.