(x^m)^n 乘 (x^n)^m ,m^2乘(m^5)^2+m^10m^2+m乘m^3乘m^8,-[(-x)^3]^m,[(a-b)^n]^M,(m为奇数)
问题描述:
(x^m)^n 乘 (x^n)^m ,m^2乘(m^5)^2+m^10m^2+m乘m^3乘m^8,-[(-x)^3]^m,[(a-b)^n]^M,(m为奇数)
答
(x^m)^n 乘 (x^n)^m =x^mn*x^mn=x^2mnm^2乘(m^5)^2+m^10m^2+m乘m^3乘m^8=m^2*m^10+m^12+m^4*m^8=m^12+m^12+m^12=3m^12-[(-x)^3]^m,(m为奇数)=-[-x^3]^m=x^3m[(a-b)^n]^M,(m为奇数)=(a-b)^mn