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

$f \left(x\right) = {x}^{2} , \mathmr{and} , g \left(x\right) = - 4 x$.
Then, $\left(f - g\right) \left(x\right) = f \left(x\right) - g \left(x\right) = {x}^{2} - \left(- 4 x\right) = {x}^{2} + 4 x = h \left(x\right)$.