-1的三次方减(1+0.5)*三分之一/(-4)=?

问题描述:

-1的三次方减(1+0.5)*三分之一/(-4)=?

-1^3-(1+0.5)*1/3/(-4)
=-1-3/2*1/3/(-4)
=-1-1/2/(-4)
=-1+1/2/4
=-1+1/2*1/4
=-1+1/8
=-7/8