The roots of the equation x3 - 12x2 + 39x - 28 = 0 are in A. P., the c – McqOptions

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1.	The roots of the equation x3 - 12x2 + 39x - 28 = 0 are in A. P., the common difference is
A.	2
B.	3
C.	-2
D.	4
Answer» C. -2

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