Question

已知4的m次方*8的m次方-1 除以2的值是512

Answer 1

4的m次方*8的m次方-1 除以2的值是512

2^2m*2^(3m-3)*2^(-1)=2^9

2^(2m+3m^2-3-1)=2^9

2^(2m+3m^2-4)=2^9

3m^2+2m-4=9

3m^2+2m-13=0

m=（-2+-4根号10)/6