8²º¹²×(-0.125)²º¹³简便计算?
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8²º¹²×(-0.125)²º¹³简便计算?8²º¹²×(-0.125)
8²º¹²×(-0.125)²º¹³简便计算?
8²º¹²×(-0.125)²º¹³
简便计算?
8²º¹²×(-0.125)²º¹³简便计算?
8²º¹²×(-0.125)²º¹³
=8²º¹²×0.125²º¹²×﹙-0.125﹚
=﹙8×0.125﹚²º¹²×-0.125
=1×﹙-0.125﹚
=-0.125
8²º¹²×(-0.125)²º¹³
=8²º¹²×(-0.125)²º¹²×(-0.125)
=[8×(-0.125)]²º¹²×(-0.125)
=(-1)²º¹²×(-0.125)
=1×(-0.125)
=-0.125