Answer:
Step-by-step explanation:
Add the square of half the x-coefficient to both sides.
x² -12x +(-6)² = 61 +(-6)²
Answer:
x² - 12x + 36 = 97
Step-by-step explanation:
Given
x² - 12x = 61
To complete the square
add (half the coefficient of the x- term)² to both sides
x² + 2(- 6)x + (- 6)² = 61 + (- 6)², so
x² - 12x + 36 = 61 + 36
x² - 12x + 36 = 97
