1.

11+x(b−a)+x(c−a)+11+x(a−b)+x(c−b)+11+x(b−c)+x(a−c)=?11+x(b−a)+x(c−a)+11+x(a−b)+x(c−b)+11+x(b−c)+x(a−c)=?

A. 0
B. 1
C. xa - b - c
D. None of these
Answer» B. 1


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