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2 March, 15:38

what is the value of the discriminant of the quadratic equation - 2x^2 - 8x+8 and what does it value mean about the number about the number

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  1. 2 March, 16:27
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    Step-by-step explanation:

    It is been considered that Discriminant is calculated by the following formula:

    D = b*b - 4 * a * c

    In order to simplify the calculations we can divide all the numbers by 2 and we will have the same quadratic equation:

    -x^2 - 4x+4=0

    and as usual quadratic equation is presented as the following:

    ax^2 - bx + c = 0

    so in our case a = - 1; b = - 4; c = 4;

    Then D = - 4*4 - 4 * (-1) * 4 = - 16+16 = 0

    I am not quite understanding the following phrase:

    "and what does it value mean about the number about the number"

    but if the question was in regards of the following number '-2x^2' so number ^2 is actually the value of power so 'x' is multiplied on it is own and this equation basically means the following:

    -2x^2 = - 2 * (x) * (x)
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