Question

The domain for f(x) and g(x) is the set of all real numbers.

let f(x) = 3x + 5 and g(x) = x^2. find (f - g)(x).

Answer 1

(f - g)(x) = - x² + 3x + 5

Explanation:

`D_f=D_g\quad\implies\quad (f-g)(x)=f(x)-g(x)\\\\\\(f-g)(x)=f(x)-g(x)=(3x+5)-(x^2)=-x^2+3x+5`