Question 109810
{{{graph(500,500,-10,10,-10,10,x^2-2x-1)}}}
Range= -2 to infinity
.
f(x)=x^2-2x-1
x^2-2x-1=2
x^2-2x-3=0
(x-3)(x+1)=0
x=3, x=-1
.
Ed