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七年级数学：若a-b=-4，ab=-3，求(a+b)(a²-b²)值是多少？
七年级数学：已知a-b=-4，ab=-3，求(a+b)(a²-b²)值是多少？乘法公式经典考题。
初中数学，完全平方公式，基础训练，培优专题58/139
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