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    Practice problems on Quadratic Equations

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    9 practice problems on quadratic equations in the attached file.

    8)a)Solve 7x+x(x-2)=0
    b)Find the x-intercepts of f(x)=7x+x(x-2)
    15) Find the vertex, the line of symmetry, the maximum or minimum value of the quadratic function and graph the function: f(x)=2x2-8x+6
    (21) Solve by completing the square
    (23) Find the vertex, the line of symmetry, the maximum or minimum value of the quadratic function and graph the function: f(x)=x2-2X-1

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    8)a)Solve 7x+x(x-2)=0
    b)Find the x-intercepts of f(x)=7x+x(x-2)

    (a) 7x + x^2 - 2x = 0
    x^2 + 5x = 0
    x(x + 5) = 0
    x = {-5, 0} are the solutions.
    (b) The x-intercepts are (-5, 0) and (0, 0).

    15) Find the vertex, the line of symmetry, the maximum or minimum value of the quadratic function and graph the function: f(x)=2x2-8x+6

    f(x) = 2x^2 - 8x + 6 = 2(x^2 - 4x + 4) - 2 = 2(x - 2)^2 - 2
    (a) Vertex is (2, -2)
    (b) The line of symmetry is x = 2
    (c) f(x) has a minimum value of -2 at x = 2
    (d) Graph:

    16) Find the ...

    Solution Summary

    (23) (a) Vertex is (1, -2)
    (b) The line of symmetry is
    (c) f(x) has a minimum value of

    All 9 questions neatly solved showing all steps.

    $2.49

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