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http://prntscr.com/ml6bft

 Feb 14, 2019
 #1
avatar+98090 
+1

Here's a graphical solution

 

Note that we cannot take the log of 0  or a negative value

 

So  x^2 - 4x + 3    must be > 0

 

Thus....if we graph x^2 -4x +3 here  : https://www.desmos.com/calculator/8jbvusmqcq

 

We can note that the gragh is > 0   on these intervals

 

(-inf, 1)   and  (3, infinity)

 

Note that  answer "K"  seems to fit the bill....!!!!

 

 

cool cool cool

 Feb 14, 2019

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