Hi

 

 

 

    3x+1 = x^2 - 6x + 9

    x^2 - 9x+ 8 = 0

factoring

 (x-1)(x-8) = 0

 (x-1)= 0  x = 1 an Extraneous solution:  2 + 3 ≠ 1

 (x-8) = 0 x = 8



 

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