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

Question

3121 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2018-03-12T19:38:54

$f(x) + g(x) = 2x^2 - 5x + 4$
Domain: $RR$

$f(x) + g(x) = (x^2 - 5x + 8) + (x^2 - 4)$

$f(x) + g(x) = 2x^2 - 5x + 4$

The domain is all real numbers.

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