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5 February, 05:23

91. If there is no real number solution to the quadratic equation, x^2+2x+C=0, what is a possible value of c?

1

-2

0

3

+5
Answers (1)
  1. 5 February, 06:17
    0
    For no real solution, you must have b^2 - 4ac of the quadratic formula be less than 0.

    a = 1; b = 2; c = C

    b^2 - 4ac < 0

    2^2 - 4 (1) (C) < 0

    4 - 4C < 0

    -4C < - 4

    C > 1

    The only choice greater than 1 is 3.

    Answer: the 4th choice, 3
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