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19 September, 07:04

Evaluate the discriminant for the following equation. Then use it to determine the number of distinct solutions, and tell whether they are rational, irrational, or nonreal complex numbers. 5 x squared plus 11 x plus 6 equals 0

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  1. 19 September, 08:05
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    The Solutions are distinct and rational

    Step-by-step explanation:

    Given the general form of a quadratic equation: ax²+bx+c=0

    The discriminant D=b²-4ac is used to determine the nature of the roots of the quadratic equation.

    There are three cases:

    1. If b² - 4ac > 0

    The quadratic equation has two real, distinct (different) roots.

    2. If b² - 4ac < 0

    The quadratic equation has no real roots. i. e. It has complex roots

    3. If b² - 4ac = 0

    The quadratic equation has two real, identical roots.

    Given our equation:

    5x²+11x+6=0

    a=5, b=11, c=6

    The discriminant:

    D=b²-4ac=11²-4 (5) (6) = 1

    Since D=1>0, the roots of the equation are real and distinct.
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