化简,:3(m-1)^2+(m+2)(m^2-2m+4)-m(m^2+3m-3)
问题描述:
化简,:3(m-1)^2+(m+2)(m^2-2m+4)-m(m^2+3m-3)
答
原式=3(m^2-2m+1)+(m^3+8)-(m^3+3m^2-3m)
=3m^2-6m+3+m^3+8-m^3-3m^2+3m
=11-3m