Question

For the given functions f and g, find the following:

(a) (f + g)(x)
(b) (f - g)(x)
(c) (f + g)(2)
(d) (f - g)(1)


`f(x)=3x^2+x+2; g(x)=x^2-3x-1`

Answer 1

`(f+g)(x)=4x^2-2x+1, (f-g)(x)=2x^2+4x+3`

`(f+g)(2)=16-4+1=13, (f-g)(1)=2+4+3=9`