Question

Use the inverse properties of logarithms to simplify the expression.

10^(log 21)

Answer 1

since logs and exponentials are inverses,
\[\log_b(b^x)=x\] and
\[b^{\log_b(x)}=x\]
use the second one with \(b=10\) and \(\log(x)=\log_{10}(x)\)

Answer 2

It's log10 x?