f(x)=4x^3+5x^2-3x-6
g(x)=4x-5
Find (f-g)(x).

Answer: c)
Step-by-step explanation: You combine the two together f(x) minus the g(x)
f(x)-g(x)=4x^3+5x^2-3x-6-4x+5(-3x-4x=-7x)(-6+5=-1)
= 4x^3+5x^2-7x-1