SOLUTION: If k = (x + 3)/(x - 4) and k^2

SOLUTION: If k = (x + 3)/(x - 4) and k^2 - 3k = 28, find k.

Question 1208851: If k = (x + 3)/(x - 4) and k^2 - 3k = 28,
find k.

Answer by Edwin McCravy(20054) (Show Source): You can put this solution on YOUR website!


Why even bother with saying  k = (x + 3)/(x - 4)? 
since you only want k?

 then





k-7=0; k+4=0
  k=7;   k=-4  <--- Answers

You don't seem to care what x is, only k.  But if you did you could plug in

 and get  if k=7 and  if x=-4.

Edwin

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