The function of f (x) = (x-4) (x-2) What is the range of the function?

o all real numbers less than or equal to 3

all real numbers less than or equal to - 1

all real numbers greater than or equal to 3

all real numbers greater than or equal to - 1

All real numbers greater than or equal to - 1

Step-by-step explanation:

f (x) = (x-4) (x-2) = x²-4x-2x+8

f (x) = x²-6x+8

f (x) = [ (x) ²-2 (x) (3) + 3²-3²]+8

f (x) = (x-3) ²-9+8

f (x) = (x-3) ²-1

The function has a least value of - 1.

So, the range is also all real values greater than or equal to - 1

D) All real numbers greater than or equal to - 1

Step-by-step explanation:

The range is at least - 1