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Algebra 22 Online
OpenStudy (anonymous):

How can I express logbx-(logby+logbz) as a single log?

OpenStudy (anonymous):

When you subtract logarithmic expressions, you may divide their interior under one log. Contrarily, when you add logarithmic expressions, you may multiply their interior under one log. For example: \[\log _{b} y+\log _{b} z = \log _{b} yz\]\[\log _{b} x-\log _{b} y = \log _{b}\frac{ x }{ y }\]Use these properties for your expression @kat50036

OpenStudy (anonymous):

but where is the Z?

OpenStudy (anonymous):

I merely showed you the properties. I was asking you to apply it to your expression so that you get a better understanding of the concept. Where should the z be? @kat50036

OpenStudy (anonymous):

\[\log_{b}x - (\log_{b}y + \log_{b}z)\]

OpenStudy (anonymous):

I thought it should maybe read logb x/yz?

OpenStudy (anonymous):

That's exactly right. Nice job.

OpenStudy (anonymous):

It is??? Thank you so much. Can I ask another one? About expanding?

OpenStudy (anonymous):

Sure go ahead and post it up. Don't forget to close this thread ^_^

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