If \( x^{2}+k(4 x+k-1)+2=0 \) has equal roots, then \( k= \)
(a) \( -\frac{2}{3}, 1 \)
(b) \( \f...
If \( x^{2}+k(4 x+k-1)+2=0 \) has equal roots, then \( k= \)
(a) \( -\frac{2}{3}, 1 \)
(b) \( \frac{2}{3},-1 \)
(c) \( \frac{3}{2}, \frac{1}{3} \)
(d) \( -\frac{3}{2},-\frac{1}{3} \)
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