x^2 - 36 = 5x x^2 - 5x - 36 = 0 x^2 - 9x + 4x - 36 = 0 x(x - 9) + 4(x - 9) = 0 (x - 9) (x + 4) = 0 From the above set we can say that x = 9 is the positive solution of the equation given in the question. I hope that this is the answer that you were looking for and it has come to your great help.
