SOLUTION: what is the process to get to the answer of logx+log(x-9)=1

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Question 144156This question is from textbook
: what is the process to get to the answer of logx+log(x-9)=1 This question is from textbook

Answer by scott8148(6628) About Me  (Show Source):
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adding logs means multiplying quantities __ x(x-9)=10 __ x^2-9x-10=0

factoring __ (x+1)(x-10)=0

x+1=0 __ x=-1 __ logs of negative quantities are not defined

x-10=0 __ x=10