For f(x)=x2 and g(x) = x²+4, find the following composite functions and state the domain of each. (a) fog. (b) g of (c) fof (d) gog (a) (fog)(x) = (Simplify your answer.) Select the correct choice below and fill in any answer boxes within your choice. OA. The domain of fog is {x (Type an inequality. Use integers or fractions for any numbers in the expression. Use a comma to separate answers as needed.) OB. The domain of fog is all real numbers. (b) (g of)(x) = (Simplify your answer.) Select the correct choice below and fill in any answer boxes within your choice. OA. The domain of g of is {x (Type an inequality. Use integers or fractions for any numbers in the expression. Use a comma to separate answers as needed.) OB. The domain of g of is all real numbers. (c) (fof)(x)= (Simplify your answer.) Select the correct choice below and fill in any answer boxes within your choice. OA. The domain off of is {x (Type an inequality. Use integers or fractions for any numbers in the expression. Use a comma to separate answers as needed.) OB. The domain of f of is all real numbers. (d) (gog)(x) = (Simplify your answer.) Select the correct choice below and fill in any answer boxes within your choice. OA. The domain of gog is {x (Type an inequality. Use integers or fractions for any numbers in the expression. Use a comma to separate answers as needed.) OB. The domain of go g is all real numbers. 80 a 8 Dil