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(x^2-4) (x^2+6x+8)

__________ x _________ which is

(x^2+2x-8) (x^2+4x+4)

(x+2)(x-2) (x^2+4x+2x+8)

___________ x _____________ which is

(x^2+4x-2x-8) (x^2+2x+2x+4)

(x+2)(x-2) x(x+4)+2(x+4)

___________ x ____________ which is

x(x+4)-2(x+4) x(x+2)+2(x+2)

(x+2)(x-2) (x+2)(x+4)

________ x _________ which is 1 as all the terms in the num & den cancel

(x-2)(x+4) (x+2)(x+2)

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12y ago

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