log₂2.5+log₂1/40=

来源：学生作业帮助网编辑：作业帮时间：2024/05/06 23:07:21

log₂2.5+log₂1/40=
log₂2.5+log₂1/40=

log₂2.5+log₂1/40=
log2 5/2+log2 1/40 =log2 （2.5*1/40）=log2 1/16= - log2 16 =-4