# If f(x) = x² - 5x + 8 and g(x) = x² - 4 what is f(x) + g(x) and its domain?

Mar 12, 2018

$f \left(x\right) + g \left(x\right) = 2 {x}^{2} - 5 x + 4$
Domain: $\mathbb{R}$
$f \left(x\right) + g \left(x\right) = \left({x}^{2} - 5 x + 8\right) + \left({x}^{2} - 4\right)$
$f \left(x\right) + g \left(x\right) = 2 {x}^{2} - 5 x + 4$