负八的两千零九次幂×0.125的2008次幂等于
问题描述:
负八的两千零九次幂×0.125的2008次幂等于
答
(-8)^2009×0.125^2008
=(-8)^2008×(-8)×0.125^2008
=(-8)×[(-8)^2008×0.125^2008]
=-8×(-8×0.125)^2008
=-8×(-1)^2008
=-8×1
=-8