3m+2n=8,8的m次方+4的n次方=多少
问题描述:
3m+2n=8,8的m次方+4的n次方=多少
答
3m+2n=8
8^m * 4^n
=(2^3)^m * (2^2)^n
=2^(3m) * 2(2n)
=2^(3m+2n)
=2^8
=16*16
=256