Question 2
Quadratic EquationsIf equation 6 − kx + 2x2 = 0 has equal roots, find k2 + 4.
- A.48
- B.52
- C.44
- D.96
Show the answer and explanation
Answer: B (52)
Explanation
Equal roots need b² = 4ac: k² = 4 × 2 × 6 = 48. So k² + 4 = 52.
If equation 6 − kx + 2x2 = 0 has equal roots, find k2 + 4.
Answer: B (52)
Equal roots need b² = 4ac: k² = 4 × 2 × 6 = 48. So k² + 4 = 52.