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Attempt following question by selecting a choice to answer.
c
Use Rolle's Theorem to determine the value of c such that f ′ (c) = 0, if f(x) = x2-4x-12x+4 in the interval [- 2, 6].
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A.  c- 4 - 25
B.  c4
C.  c- 4 + 25
D.  c- 4
E.  c0

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