Answer:
Ok what is the problem
Step-by-step explanation:
Answer:
(x - 2)² - 30
Step-by-step 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
You subtract 15.50 from 47.50
then you will get your answer it is 31