What number should be added to both sides of the equation to complete the square?

x² - 6x = 5

x = 8.7 or x = 1.3

Step-by-step explanation:

x² - 6x = 5

(b/2) ² = (6/2) ² = 9 (Using Completing the square method)

x² - 6x + 9 = 5 + 9

(x - 5) ² = 14

x-5 = √14

x-5 = ±3.7

Either x-5 = 3.7 or x-5 = - 3.7

x = 3.7+5 or x = - 3.7+5

x = 8.7 or x = 1.3