If \( S \) is the set of all real \( x \) such that \( \frac{2 x}{2 x^{2}+5 x+2}-\frac{1}{x+1} \...
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0If \( S \) is the set of all real \( x \) such that \( \frac{2 x}{2 x^{2}+5 x+2}-\frac{1}{x+1} \), then \( S \) is equal to
(A) \( (-2,-1) \)
(B) \( (-2 / 3,0) \)
(C) \( (-2 / 3,-1 / 2) \)
(D) \( (-2,-1) \cup(-2 / 3,-1 / 2) \)
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