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For (5x-1)/((x-1)(x+1)) written as A/(x-1) + B/(x+1), the value of B is
A1
B-3
C2
D3
Answer & Solution
Correct answer: D. 3
At x = -1 the numerator is -6 and x-1 is -2, so B = 3 (and A = 2).
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