SOLUTION: Find all values of x for which f(x)=o when f is defined by f(x)=x^2-4x-1.

SOLUTION: Find all values of x for which f(x)=o when f is defined by f(x)=x^2-4x-1.

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Question 881375: Find all values of x for which f(x)=o when f is defined by f(x)=x^2-4x-1.
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
What? o or 0 ?
If you mean this, then you can use general solution to a quadratic formula:

If you did mean , this can be dealt similarly after adding to both sides.
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