MCQ
If $x^2+k(4 x+k-1)+2=0$ has equal roots, then $k=$
- A$-\frac{2}{3}, 1$
- ✓$\frac{2}{3},-1$
- C$\frac{3}{2}, \frac{1}{3}$
- D$-\frac{3}{2},-\frac{1}{3}$
✓
Answer
Correct option: B.
$\frac{2}{3},-1$
B
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Class
|
$0-20$ | $20-40$ | $40-60$ | $60-80$ | $80-100$ |
|
Frequency
|
$12$ | $15$ | $32$ | $P$ | $13$ |