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阅读材料猜想结论，计算2的9次方，到+2³-2²+2的和是多少？
数学考试，阅读理解题型，阅读材料猜想结论，计算2的9次方，到+2³-2²+2的和是多少？
初中数学，有理数混合运算，简便计算，基础训练，培优专题232/395
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