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what is the solution to the square root of 5x +4 = x-4

Sagot :

Original equation, root isolated, 
     √5x+4 = √x+4

     Plug in 1 for  x 
      √5•(1)+4 = √(1)+4

      Simplify
      √9 = 5
      Solution does not check 
      3 ≠ 5 

                        x = 9

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