Question

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Answer 1

We rewrite the expresion:
((t+3)/(t+4))*(1/(t^2+7t+12))
We have then
((t+3)/(t+4))*(1/((t+4)*(t+3)))
Rewriting tge expression:
(1/(t+4)^2)
Answer:
(1/(t+4)^2)
opcion 3