Question

If Lylah completes the square for f(x) = x 2 + 24x -18 in order to find the minimum, she must write f(x) in the general form f(x) = (x − a)2 + b. What is the value of b for f(x)?

Answer 1

F(x)= (x − a)2 + b

Rewrite the equation as (X-a)2 + b= f(X) (X-a)2 + b= f(X) subtract (x-a)^2 from both sides of the equation b=f(x)- (x-a)^2