Status: Waiting for your answers. Using the partially completed work below, solve the equation x^{2} - 2x - 15 = 0 by completing the square. x^{2} - 2x - 15 = 0Step 1:x^{2} - 2x = Step 2: x^{2} - 2x + = Step 3: (x - )^{2} = Step 4: x - = + Step 5: x = + Step 6: x_{1}x_{2} = = - = -3 + = 5