0.5aˇn-1×bˇm-1×c×(ˉ0.2aˇ2bˇ3)=?

问题描述:

0.5aˇn-1×bˇm-1×c×(ˉ0.2aˇ2bˇ3)=?
ˇ 次方

0.5aˇ(n-1)×bˇ(m-1)×c×(ˉ0.2aˇ2bˇ3)
=-(0.5*0.2)a^(n-1+2)b^(m-1+3)c
=-0.1a^(n+1)b^(m+2)c.