What a cute little quadratic polynomial function. Does it have a name? Does it come when it is called? Is it housebroken? Exactly what is it you wanted to do with this? Is there a question somewhere that I missed?
You can put this solution on YOUR website! f(x)= x^2-2x-1
x=(2+-sqrt[-2^2-4*1*-1])/2*1
x=(2+-sqrt[4+4)/2
x=(2+-sqrt8)/2
x=(2+-2.828)2
x=2+2.828)/2
x=4.828/2
x=2.414 ans.
x=(2-2.828)/2
x=-.828/2
x=-.414 ans.