Answer:
The answer is 4x^3 + 2x^2 + 2x
Step-by-step explanation:
To find a subtracted function, simply change all of the signs in the second function and then combine like terms.
f(x) - g(x) = 9x^3 + 2x^2 - 5x + 4 - 5x^3 + 7x - 4
f(x) - g(x) = 4x^3 + 2x^2 + 2x
