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Find the values of \(k\) for each of the following quadratic equations, so that they have two equal roots.
 
(i) \(2x^2 + kx + 3 = 0\)
 
\(k=\)
 
(ii) \(kx (x – 2) + 6 = 0\)
 
\(k=\)
Answer variants:
\(-\sqrt{2}\)
\(6\)
\(\sqrt{5}\)
±26