Express the function.
f(x) = 2x² - 4x - 13
in the form f(x) = a(x + h)² + k​

2(x-1)^2-15

Step-by-step explanation:

2x^2-4x=2(x-1)^2-2

insert that in:

f(x)=2(x-1)^2-2-13=2(x-1)^2-15

a=2,h=-1,k=-15

a = 11 : 4

b = 38

c = 1 for every 6