(-0.25)*2/5*8-9/(-3/2)²

问题描述:

(-0.25)*2/5*8-9/(-3/2)²
负0.25*五分之二除以8减9除以负三分之二的平方,

(-0.25)*2/5*8-9/(-3/2)²
=(-0.25*8)*2/5-9/(9/4)
=-2*2/5-4
=-4/5-4
=-4又4/5