PrecalculusMediumFunctions and Their Graphs ShareFunctions and Their Graphs · Medium problemFind the domain of f(x)=x2−x−6f(x)=\sqrt{x^2-x-6}f(x)=x2−x−6.A(−∞,−2]∪[3,∞)(-\infty,-2]\cup[3,\infty)(−∞,−2]∪[3,∞)B(−∞,+2]∪[3,∞)(-\infty,+2]\cup[3,\infty)(−∞,+2]∪[3,∞)C(−∞,−4]∪[3,∞)(-\infty,-4]\cup[3,\infty)(−∞,−4]∪[3,∞)D(−∞,−2]∪[4,∞)(-\infty,-2]\cup[4,\infty)(−∞,−2]∪[4,∞)Check Show answer Walk through it step by step Practice more like this Review this concept