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To simplify, we can first factor the numerator and denominator of the expression.
Numerator: x^2 + 4x - 2
This trinomial cannot be factored further.
Denominator: x^2 + 4x + 3
This trinomial can be factored as (x + 1)(x + 3).
So, the simplified expression becomes:
(x + 3/3x + 6) * (x^2 + 4x - 2/x^2 + 4x + 3)
= (x + 3/3(x + 2)) * (x^2 + 4x - 2/(x + 1)(x + 3))
= (x + 3(x + 1) * (x - 2)/(x + 1)(x + 3))
Now, we can cancel out the common factors:
= (x + 3) * (x - 2)/(x + 3)
= (x - 2)
So, the simplified expression is x - 2.