bài 1: Cho đa thức f(x) = x^2 + x - 2 a) Tính các giá trị đa thức tại x = 0; x = -1; x = 1; x = -2; x = 2 b) Trong những giá trị trên, giá trị nào của x là nghiệm của đa thức f(x) bài 2: Cho đa thức g(x) = 2x^3 + x^2 - 4x -2 Tính giá trị của đa thức g(x) tại x = -2; x = -1; x = -1/2; x = 1 b) Trong các giá trị trên, giá tri nào của x là nghiệm của đa thức g(x)?

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