1.若3x-2y-4=0求1000的x次方*100的y次方 2.若a^m=2,a^n=6求:a^m-n,a^2n-3m 3,.如果9^m+3乘27^m+1除27^2m-

3x-2y-4=0
3x-2y=4
1000^x÷100^y
=(10^3)^x÷(10^2)^y
=10^3x÷10^2y
=10^(3x-2y)
=10^4
=10000
a^(m-n)
=a^m/a^n
=2/6
=1/3
a^(2n-3m)
=a^2n/a^3m
=(a^n)^2/(a^m)^3
=6^2/2^3
=36/8
=9/2 我也觉得不好做（我也是初一的学生）