Answer :

x²-9=(x-3)(x+3)
x²-4x+4=(x-2)²
x²-4=(x-2)(x+2)
x²-x-6=(x+2)(x-3)
((x-3)(x+3)(x-2)(x+2)) / ((x-2)²(x+2)(x-3)) =(x+3) / ((x-2) 




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