0.25的2006次方乘以(-4)的2005次方=

问题描述:

0.25的2006次方乘以(-4)的2005次方=

原式=0.25×0.252005×(-4)2005
=0.25×【0.25×(-4)】2005
=0.25×(-1)2005
=0.25×(-1)
=-0.25