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    Solving an equation using quadratic formula

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    (see attached for full problem description)

    (a) Use the quadratic formula to determine, to the nearest tenth, the roots of the equation:
    2x^2 + 1 = -4x.
    (b) Determine the vertex of the parabola y = 2x^2 + 4x + 1. (recall the x value of the vertex is given by x = -b/2a)
    (c) Use parts a and b to sketch the graph of y = 2x^2 + 4x + 1. You may wish to determine a few other "points that the parabola passes through" to obtain a more accurate graph. Note the line, x = -b/2a is the axis of symmetry. What does this give you?)

    © BrainMass Inc. brainmass.com October 10, 2019, 7:29 am ad1c9bdddf
    https://brainmass.com/math/basic-algebra/solving-equation-using-quadratic-formula-583789

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    Solution Summary

    The solution gives detailed steps on solving an equation using the quadratic formula, solving the vertex and finally graphing the function.

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