数学 加分 急

4×8^m×16^m=2^9
2^2×2^3m×2^4m=2^9
2^(2+3m+4m)=2^9
2+3m+4m=9
m=1

4乘以8的m次方再乘以16的m次方等于2的9次方
4*8^m*16^m=2^9
2^2*2^3m*2^4m=2^9
2^(2+3m+4m)=2^9
2+7m=9
7m=7
m=1

4*8^m*16^m=2^9
则

2^2*2^3m*2^4m=2^9

2^(2+3m+4m)=2^9
则
2+3m+4m=9
m=1

4*8^m*16^m=2^9

2^2*2^3m*2^4m=2^9

2+3m+4m=9

m=1

4*8^m*16^m=2^9

2^2*(2^3)^m*(2^4)^m=2^9
2^2*2^3m*2^4m=2^9
2^(2+3m+4m)=2^9
也就是说 2+3m+4m=9 所以m=1