Question

已知10的m次方=5,10的n次方=4.,求10的2m-3n+1次方

Answer 1

10^m=5

10^n=4

10^(2m-3n+1)

=10^(2m)/10^(3n) × 10^1

=(10^m)^2/(10^n) ^3 × 10

=5^2/4 ^3 × 10

=125/32