數學知識交流---知識送大禮之解方程

解：x³ - x² = 0
x² (x - 1) = 0
x² = 0 或 x - 1 = 0
∴x1 = x2 = 0, x3 = 1.

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下標數字： ₀ ₁ ₂ ₃ ₄ ₅ ₆ ₇ ₈ ₉

　　　如： x₁ = x₂ = 0, x₃ = 1

x^3 - x^2 = 0
x^2 ( x-1) = 0
x = 0 or 1