Posted by victoria on Tuesday, September 11, 2012 at 2:27pm.
1. ok
2. ok
3. (f-g)(x) = x^2 - 3x + 4
4. (fg)(x) = 3x^3 - x^2 + 9x - 3
5. (fg)(x) is not a number. Also, I find no value for x where (fg)(x) = 5
6. ok
7. (fog)(x) = f(g(x))
= g^2 + 3
= (3x-1)^2 + 3
= 9x^2 - 6x + 4
8. same as 5.