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2x/(x^2-1) is identical to which sum?
A1/(x-1) + 1/(x+1)
B1/(x-1) - 1/(x+1)
C2/(x-1) + 2/(x+1)
D1/(x+1) - 1/(x-1)
Answer & Solution
Correct answer: A. 1/(x-1) + 1/(x+1)
1/(x-1) + 1/(x+1) = ((x+1) + (x-1))/(x^2-1) = 2x/(x^2-1).
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