1.若a的2n次方=3,则a的6n次方=?

问题描述:

1.若a的2n次方=3,则a的6n次方=?
2.已知10的m次方=2,10的n次方=3,则10的3m+2n次方=?
3.已知3x-5y-2=0,则8的x次方乘以32的-y次方=?
4.如果2的x+1次方乘以3x+1次方=6的2x-1次方,则x=?
5.当a=3,b=-1/3时,a的3n+2次方乘以b的2n次方乘以b的n+4次方=?

a的6n次方=(a的2n次方)³ = 3³ =27下面用^代表次方的意思10^(3m+2n) = (10^m)³× (10^n)² = (2)³× (3)²=8*9 =728^x×32^-y = 2^(3x) × 2^(-5y) = 2^(3x-5y)=2^2=42^(x+1)×3...