QUADRATIC EQUATIONS HELP(no link or im reporting)

Answer:
D
Step-by-step explanation:
Given
x² - 8x +
To complete the square
add ( half the coefficient of the x- term )² to x² - 8x
x² + 2(- 4)x + (- 4)²
= x² - 8x + 16 → D
= (x - 4)² ← perfect square