2.5的2003次方×﹙－0.4﹚的2004次方=多少?
问题描述：
2.5的2003次方×﹙－0.4﹚的2004次方=多少?
答
2.5^2003×(-0.4)^2004 =2.5^2003×0.4^2004 =2.5^2003×0.4^2003×0.4 =(2.5×0.4)^2003×0.4 =1^2003×0.4 =0.4
2.5的2003次方×﹙－0.4﹚的2004次方=多少?
2.5^2003×(-0.4)^2004 =2.5^2003×0.4^2004 =2.5^2003×0.4^2003×0.4 =(2.5×0.4)^2003×0.4 =1^2003×0.4 =0.4