What is the answer to these two boxes

F(x) = (x^2 + 3x − 4) and g (x) = (x+4) find f/g and state the domain.

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions.a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0

It says factor each expression 49x-28?