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The polynomial x3 – kx2 + 9x has three real zeros if and only if, k satisfies __________. (a) |k| ≤ 6 (b) k = 0 (c) |k| > 6 (d) |k| ≥ 6 |
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Answer» The correct answer is : (d) |k| ≥ 6 |
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