If x = 2, the value of the algebraic formula AX3 + BX + 1 is 6, then when x = - 2, the value of the algebraic formula AX3 + BX + 1 is 6______ .
When ∵ x = 2, the value of the algebraic formula AX3 + BX + 1 is equal to 6, substituting x = 2 into 8A + 2B + 1 = 6, ∵ 8A + 2B = 5, substituting x = - 2 into AX3 + BX + 1 to get: - 8a-2b + 1 = - (8a + 2b) + 1 = - 5 + 1 = - 4; so the answer is: - 4
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