Question 1002709
I'm sorry but no for 2 and 3....For g(f(x))

2.)

f(x)=x -1
g(x)=2x^2 -2x -5


You are plugging what F(x) equals into the input for g(x). So 

2(x-1)^2-2(x-1)-5

Then solve..Be careful of your signs

Do the same for number 3.