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7 November, 01:53

What are the values of k that make 2x^2+kx+5?

A) 7 or 11

B) 2 or 5

C) 1 or 10

D) 1 or 5

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Answers (1)
  1. 7 November, 03:14
    0
    Answer: (A)

    Solution: Determinant > = 0

    => k^2 - 4.2.5> = 0

    => k^2> = 40

    => k = 7 or 11
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