f(x)=9x^3 + 2x^2 - 5x+4 and g(x)= 5x^3 -7x +4. What is f(x)-g(x)?
f(x)=9x^3 + 2x^2 - 5x+4 and g(x)= 5x^3 -7x +4
f(x) - g(x) =
9x^3 + 2x^2 - 5x + 4
- [ 5x^3 -7x + 4 ]
4x^3 + 2x^2 + 12x
