Question

同底数幂的乘法的计算题,3×9×27×3^mm^3×m^5+m^2×m^6-2m×m^3×m^4

Answer 1

3×9×27×3^m=3^1*3^2*3^3*3^m=3^(1+2+3+m)=3^(6+m)

m^3×m^5+m^2×m^6-2m×m^3×m^4=m^(3+5)+m^(2+6)-2m(1+3+4)=m^8+m^8-2m^8=0