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Mathematics 21 Online
OpenStudy (anonymous):

Hi, got trouble with this question : https://www.dropbox.com/s/vaq15ol2642pnjb/wrong.png Thanks for your help, and sorry for the image!

OpenStudy (anonymous):

the \(a-b\) part should be in the numerator since it is plus

OpenStudy (anonymous):

\[\ln\left(\frac{(a+b)(a-b)}{c^7}\right)\]

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