Multiple Choice

A production manager is standardizing an efficiency model represented by the rational expression 3xx2+4x+3\frac{3x}{x^2 + 4x + 3}. When this expression is rewritten with the common denominator (x+1)(x3)(x+3)(x+1)(x-3)(x+3), what is the simplified numerator of the new, equivalent expression?

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Updated 2026-04-21

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