计算4m+5m-m^4*m^5 3^3*3^(m-1)*3^(2m-2)+3^3m

问题描述:

计算4m+5m-m^4*m^5 3^3*3^(m-1)*3^(2m-2)+3^3m

4m+5m-m^4*m^5
=9m-m^9
3^3*3^(m-1)*3^(2m-2)+3^3m
=3^(3+m-1+2m-2)+3^3m
=3^3m+3^3m
=2×3^3m