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-6 tambah kurang √6²-4.1.8 per 2
-6 tambah kurang √36-32 per 2
-6 tambah kurang √4 per 2
-6 tambah kurang 2 per 2
jadi X1 = -6 + 2 per 2
-4/2 = -2
X2 = -6-2 per 2
-8/2 = -4
a = 1, b = 6, c = 8
Maka,
Dengan mengganti tanda masing-masing:
x₁ = -3 - 1 = -4
Dan
x₂ = -3 + 1 = -2