\(f(x)=(x-a)(x-b)\) The function \(f\) is defined by the given equati…

Question

Prompt

f (x) = (x - a) (x - b)

The function

f

is defined by the given equation, where

a

and

b

are integer constants. If

f (39) > 0

f (42) < 0

, and

f (45) > 0

, which of the following could be the value of

a + b