如果9^m+3*27^m/3^2m-1=81,求m的值

如果9^m+3*27^m/3^2m-1=81,求m的值 如果9^m+3乘27^m+1除以3^4m+7=81,那么m=? 当m=1/2时,求15m²-9-{-4m²+[5m-8m²-(2m²-m)+9m²]-3m} 3*9^m*27^m=21^21化简（-m^2)^3除以（m^*m^2) 已知9^m*27^m-1除以3^2m=27,m的值 1/m(m+1)+1/(m+1)(m+2)+1/(m+2)(m+3)+.+1/(m+9)(m+10) (m+3m+5m+...+2015m)-(2m+4m+6m+...+2014m)= m-2m-3m+4m-5m-6m+7m.2004m=? (m+3m+5m.+2013m)-(2m+4m+6m+.+2012m)=? 如果9的m+3次方×27的m+1次方÷3的2m-1次方==81,求m的值看题仔细一点呢~ 如果9的m+3次方乘27的m+1次方除以3的2m-1次方=243,求m的值. 如果9的m+3次方乘27的m+1次方除以3的2m-1次方=81.求m的值. 求解(（-m-2m)/3)^3+m(-m-2m)^2/9-m^2*(-m-2m)/3+1=9 √(3m+1)(2-m)=√3m+1×√2-m成立时|m-4|√9m^2 6m+1+|m-2|化简 m^2+m-6/m^2+2m+1÷m+3/m^+m·m^2-1/2-m 其中m=-1/2 m-2m-3m+4m-5m-6m+7m-8m-9m+...+2002m-2003m-2004m求m的值 设m n为自然数,定义m*n=m+(m+1)+(m+2)+(m+3)+.(m+n)①计算4.5*5的值 ②如果m*8=37.8,求m 计算(3m^2)^3-7m^3【m^3-m(4m^2+1)】等于 A.7m^3+9m^4 B.7m^4+48m^6 C.-7m^2+7m^4+31m^5 D.-7m^3-28m计算(3m^2)^3-7m^3【m^3-m(4m^2+1)】等于 A.7m^3+9m^4 B.7m^4+48m^6 C.-7m^2+7m^4+31m^5 D.-7m^3-28m^5-7m^6+27m^7 正确率一定要高!