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t³ + 3t² - 2t |(p...1)= 14
(p³-1) + 3(p²-1) - 2(p-1) = 14
p³ + 3p² - 2p -16 = 0
dengan horner
.....1.....3.......-2......-16
2..........2......10.......16
----------------------------------
.....1......5........8........0
..
(p³ +3p - 2p - 16) = 0
(p-2)(p^2 + 5p + 8) =0
p^2 + 5p + 8 --> definit negatif
p-2 = 0
p = 2
nilai (-4p) = -4(2) = - 8