SOLUTION: Find the value of k so that 2x^2-kx+5=0 has one real rational root.

SOLUTION: Find the value of k so that 2x^2-kx+5=0 has one real rational root.

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Question 101757: Find the value of k so that 2x^2-kx+5=0 has one real rational root.
Answer by HyperBrain(694) (Show Source): You can put this solution on YOUR website!
has one root if and only if

Since has one real root, then,

thus, or

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HyperBrain!
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