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23 September, 12:44

Without solving the equation, determine the nature of the roots of 2x2 + 3x + 9 = 0.

Two, real unequal roots

Two, real equal roots

No real roots

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Answers (1)
  1. 23 September, 13:47
    0
    No real roots

    Step-by-step explanation:

    2x² + 3x + 9 = 0

    the discriminant for this quadratic equation is given by

    b²-4ac

    in this case, a = 2, b = 3 and c=9

    hence b²-4ac

    = 3² - 4 (2) (9)

    = 9 - 72

    = - 63

    Recall that if the discriminant of a quadratic function is negative, then the function has no real roots.

    hence in this case, there are no real roots
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