Question

Rewrite the function by completing the square f(x)=x^2-4x-26

Answer 1

(x - 2)² - 30

Explanation:

To complete the square

add/subtract ( half the coefficient of the x- term )² to x² - 4x

f(x) = x² + 2(- 2)x + 4 - 4 - 26 = (x - 2)² - 30