Expressão 3: "f" left parenthesis, "x" , right parenthesis equals StartFraction, "x" squared plus 4 "x" minus 5 Over "x" minus 1 , EndFractionfx=x2+4x−5x−1
3
"x"x
"y"y
negative 2−2
negative 1−1
00
11
22
33
4
Answer: (Click the circle at the left to view the graph.) Drag along the curve. Can you find the "hole"?