Question 4
PolynomialsIf x2 − kx + 9 = 0 has equal roots, find the values of k.
- A.3, 4
- B.±3
- C.±5
- D.±6
Show the answer and explanation
Answer: D (±6)
Explanation
Equal roots: k² − 36 = 0, so k = ±6.
If x2 − kx + 9 = 0 has equal roots, find the values of k.
Answer: D (±6)
Equal roots: k² − 36 = 0, so k = ±6.