SOLUTION: log(base4)(x-3)+log(base4)(x+9)=3

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Question 757101: log(base4)(x-3)+log(base4)(x+9)=3
Found 2 solutions by tommyt3rd, josmiceli:
Answer by tommyt3rd(5050)   (Show Source): You can put this solution on YOUR website!
please repost to state a complete question - what is to be done?
Answer by josmiceli(19441)   (Show Source): You can put this solution on YOUR website!

Make the substitution:






Use quadratic formula









and


This negative answer must be rejected because a
log to the base cannot give you a negative result
is the answer
check:




OK

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