SOLUTION: Use the discriminant to determine all values of k that would result in the equation x^2 − kx + 4 = 0 having equal roots.

SOLUTION: Use the discriminant to determine all values of k that would result in the equation x^2 − kx + 4 = 0 having equal roots.

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Question 462637: Use the discriminant to determine all values of k that would result in the equation
x^2 − kx + 4 = 0 having equal roots.

Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
The discriminant is . Equating it to zero for equal roots, we get <==> , or k = -4, 4.
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