Lf x-ax-b-x-cx-d-K-A-x-c-B-x-d then k is equal to

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Algebra of Complex Numbers

lf x-ax-b/x...

Question

lf $\frac{(x - a) (x - b)}{(x - c) (x - d)} = K + \frac{A}{x - c} + \frac{B}{x - d}$ then $k$ is equal to

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