log b​ 4+log b​ 8

The given expression is "log b​ 4 + log b​ 8".

According to the properties of logarithms, the sum of two logarithms with the same base is the logarithm of the product of the numbers.

So, we can combine the two logarithms into one:

log b​ (4 * 8)

This simplifies to:

log b​ 32

So, "log b​ 4 + log b​ 8" simplifies to "log b​ 32".