If the roots of \(x^2 - 6x + k = 0\) are real and equal, then \(k = \)
A. \(36\)
B. \(6\)
C. \(9\)
D. \(-9\)
1 answer
Best answer
Answer: C. \(9\)
Real and equal roots need \(\Delta = 0\): \(36 - 4k = 0 \Rightarrow k = 9\).
Doubtly AI
· 24 Oct 2026
AI-verified · Oct 2026
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