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After splitting 1/((x+1)(x²+1)), the coefficient of x in the quadratic's numerator is
A-1/2
B1
C1/2
D0
Answer & Solution
Correct answer: A. -1/2
The x² coefficients of 1 = A(x²+1) + (Bx+C)(x+1) give A + B = 0, so B = -1/2.
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