Let `f(x) = \sqrt(56 - x)` and `g(x) = x^2 - x`.

Give the domain of `f\circ g` using interval notation. 

Box 1: Enter your answer using interval notation. Example: [2.1,5.6172)
Use U for union to combine intervals. Example: (-oo,2] U [4,oo)
Enter DNE for an empty set. Use oo to enter Infinity.