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1 October, 06:07

Discriminant and the number of real roots for this equation 9x2+12x+4=0

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  1. 1 October, 09:57
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    The discriminant is b^2-4ac

    In this equation 9=a, 12=b, 4=c

    Plugging into the formula

    12^2-4 (9) (4) =

    144-324 =

    -180 is the discriminant

    Since the discriminant is a negative number there are no real roots
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