Algebra 2

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Evaluate the discriminant of each equation. Tell how many solutions each equation has and whether the solutions are real or imaginary.

y=9x^2 - 24x

y=-2x^2 + 3x - 5

y=-4x^2 - 4x - 1

  • Algebra 2 -

    The term b ^ 2 - 4 a c

    is called the discriminant and gives important information about the number and nature of the solutions to the quadratic equation to be solved.

    Three cases are possible:

    If D > 0, the equation has 2 real solutions.

    If D = 0, the equation has 1 real solution.

    If D < 0, the equation has 2 conjugate imaginary solutions.


    In google type:

    quadratic equation online

    When you see list of results click on:

    Free Online Quadratic Equation Solver:Solve by Quadratic Formula

    When page be open in rectangle type:

    9 x ^ 2 - 24 x = 0

    and click option: solve it!

    You will see everything about function,including discriminant ,number of soutions and solutions.

    Then type:

    2 x ^ 2 + 3x - 5 = 0

    and click oprtion: solve it!


    Then type:

    - 4 x ^ 2 - 4x - 1 = 0

    and click oprtion: solve it!

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