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avatar+1129 

I think its C , but im not sure .

 Oct 19, 2018
edited by jjennylove  Oct 19, 2018
 #1
avatar+103076 
+2

Rearrange as 

 

sqrt  ( 2x  - 4)  = x - 6      (1)   square both sides

 

2x - 4  =  x^2 - 12x + 36      simplify

 

x^2 - 14x + 40    =  0

 

(x - 10)  (x - 4)    =  0

 

So  possible values of x =   4    or    10

 

  10 is good

    4 is extraneous   .... the left side  of (1) can only be 0 or positive....but 4 makes the right side negative

 

  [ Last answer ]

 

 

cool cool cool

 Oct 19, 2018
edited by CPhill  Oct 19, 2018
 #2
avatar+1129 
+1

After reviewing your explanation I see where I made my mistake it would be the last answer, thank you for explaining it to me! I appreciate your help. smiley

jjennylove  Oct 19, 2018
 #3
avatar+103076 
0

No prob  !!!

 

 

cool cool cool

CPhill  Oct 19, 2018

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