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Verified answer
PAKE CARA HORNER.......|.......2.......-3.......0........7.......-1........p
.......|.......0.......-1........2.......-1........-3......2
-1/2|_________________________
...............2......-4.......2........6........-4.....0
•Karena (2x+1) adalah faktor dari 2x^5 - 4x^4 + 7x^2 -x +p maka jika dibagi maka sisanya adalah 0
maka diperoleh persamaan
p+2 = 0
p = -2
p^2 + p = (-2)^2 + (-2)
= 4 + (-2) = 2