Question

求一道推理数学题.若5^a=50,5^b=2求16^a/4^2b

Answer 1

依题有

5^(a-b)

=5^a/5^b

=25

所以a-b=2

所以有

16^a/4^2b

=16^a/16^b

=16^(a-b)

=16^2

=256

希望对楼主有所帮助,