SOLUTION: Find the range of f(x)=x^2-2x-1 Determine the values of x in the domain of 'f' for which f(x)=2 **^2 means squared!! =]

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Question 109810: Find the range of f(x)=x^2-2x-1 Determine the values of x in the domain of 'f' for which f(x)=2
**^2 means squared!! =]
Answer by edjones(7311) About Me  (Show Source):
You can put this solution on YOUR website!
graph%28500%2C500%2C-10%2C10%2C-10%2C10%2Cx%5E2-2x-1%29
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