If 2b = a + c and y2 = xz, then what is xb - c yc - a za - b‑ equal – McqOptions

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1.	If 2b = a + c and y2 = xz, then what is xb - c yc - a za - b‑ equal to?
A.	3
B.	2
C.	1
D.	-1
Answer» D. -1

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