The correct answer for this would be the second option. The equation that is used in the process in completing the square is this: (x - 4)2 = 13. The solution is this: (x-4)(x-4) = 13 x^2 - 4x - 4x + 16 = 13 x^2 - 8x +16 = 13 x^2 - 8x = 13 -16 x^2 - 8x = -3 x^2 - 8x + 3 = 0 Hope this answers your question. Have a great day!