Consider the function f(x)=x²+5​/(5x−12)(x+4). For each prompt below, if no solution exists - enter "DNE". If there is more than one solution, enter your answer as a comma-separated list (like "1, 3"). You may find it helpful to rewrite the numerator or denomtinator in a different form to help you complete some of the parts.
Determine the vertical intereept of f.