Question

Question 28 (1 point)

(03.06)
What value is added to both sides of the equation x² - 8x = -10 in order to solve by completing the square?

Answer 1

+ 16

Explanation:

x² - 8x = - 10

to complete the square

add ( half the coefficient of the x- term )² to both sides

x² + 2(- 4)x + (- 4) = - 10 + (- 4)²

x² - 8x + 16 = - 10 + 16

thus 16 is added to both sides to complete the square