Question

write logbx + logby - logbz as a single logarithm

Answer 1

\[\log _{b}x + \log _{b}y - \log _{b}z\]

Answer 2

LogX*Y/Z

Answer 3

what?

Answer 4

i do not understand and my calculator is broken.

Answer 5

when you get a chance , see http://www.khanacademy.org/math/algebra/logarithms-tutorial/logarithm_properties/v/introduction-to-logarithm-properties

but for this question, you do not need a calculator. they want you to know that
log( a*b) = log(a) + log(b) (all the logs have to have the same base)

also
log(a/b) = log(a) - log(b)

you can use those rules to re-write your problem

Answer 6

for example,
\[ \log_b(x) + \log_b(y) \]
can be rewritten, if you use the rule
log(a) + log(b)= log( a*b)

Answer 7

i can't seem to do it myself.