Question

Find two functions f and g such that h(x) can be expressed as the function indicated. h(x) = 4x + x2; f − g?

Answer 1

`f(x)=x^2, and, g(x)=-4x`.
Then, `(f-g)(x)=f(x)-g(x)=x^2-(-4x)=x^2+4x=h(x)`.