Question 545704
what is the domain of Log3 (x^2-9)
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You can only take the log of a number>0, (regardless of base)
x^2+9>0
(x+3)(x-3)>0
number line
<...+...-3....-.....3.....+...>
Domain: (-&#8734;,-3) U (3, &#8734;)