-5^2/(-0.8)^3*(-2/5)^2-1^2014
问题描述:
-5^2/(-0.8)^3*(-2/5)^2-1^2014
答
-5^2/(-0.8)^3*(-2/5)^2-1^2014
=-5^2/(-4/5)^3*(-2/5)^2-1
=5^2/(4/5)^3*(2/5)^2-1
=4/5*(2/5)^2-1
=4/5*(2/5)^2-1
=16/125 -1
=-109/125