Answer:
Step-by-step explanation: Factoring by grouping, we get x(2x - 3)(x + 7)/(x^2 + 3). So, the expression that is equivalent to 2x^3 + 11x^2 - 21x/x^2 + 3x is x(2x - 3)(x + 7)/(x^2 + 3) for x ≠ -3 or 0.
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