Question

已知4＊2的3m次方＊4的4m次方＝2的9次方,求m的值

Answer 1

4×2^(3m)×4^(4m)

=2^2×2^(3m)×2^(2×4m)

=2^(2+3m+8m)

=2^(11m+2)

=2^9

那么11m+2=9

11m=7

m=7/11