SOLUTION: {{{log3 (x-2) + log3 (x-4) = 2 }}}
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Question 199943:
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
:
Addition of logs, the same as multiply
FOIL
The exponent equiv of logs:
(x^2 - 6x + 8) = 3^2
:
x^2 - 6x + 8 = 9
:
x^2 - 6x + 8 - 9 = 0
:
x^2 - 6x - 1 = 0
:
Use the quadratic formula: a=1; b=-6; c=-1
The positive solution: x ~ 6.162
:
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