Answer:
f(x) = (x -3)(x -5)
Step-by-step explanation:
"Intercept form" is the same as "factored form." That is, you're being asked to factor the polynomial.
Factors of 15 that sum to -8 are ...
15 = (-3)(-5)
These are the constants in the binomial factors. The equation can be written as ...
f(x) = (x -3)(x -5)