Question 756612
Write a quadratic equation in standard form with the solution set 
{2-sqrt5, 2+sqrt 5}.
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f(x) = [x-(2-sqrt(t)][x-(2+sqrt(5)]
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Rearrange:
f(x) = [(x-2)+sqrt(5)][(x-2)-sqrt(5)]
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Multiply:
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f(x) = (x-2)^2 - 5
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f(x) = x^2 -4x +4 -5
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f(x) = x^2 -4x -1
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Cheers,
Stan H.
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