1.

What is the value of [1/(1 - x(p - q)) + 1/(1 - x(q - p))] ?

A. 0
B. 1
C. (xq - xp)/(xq + xp)
D. (xq + xp)/(xq - xp)
Answer» C. (xq - xp)/(xq + xp)


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