The equations that is the result of completing the square on x^2 - 6x - 9 = 0 is (x-3)^2 =18
Completing the square method
A quadratic equation is an equation that has a leading degrees of 2.
Given the equation below
x^2 - 6x - 9 = 0
Add 9 to both sides
x^2 - 6x - 9 + 9 = 9
x^2 - 6x = 9
Complete the square
x^2 - 6x + (-3)^2 = 9 + (-3)^2
(x-3)^2 = 9 + 9
(x-3)^2 =18
Hence the equations that is the result of completing the square on x^2 - 6x - 9 = 0 is (x-3)^2 =18
Learn more on completing the square here; https://brainly.com/question/13981588
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