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5 March, 06:02

What are the roots of the polynomial equation x3-5x+5=2x2-5? Use a graphing calculator and a system of equations. Round noninteger roots to the nearest hundredth.

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Answers (2)
  1. 5 March, 07:06
    0
    It is not necessary to use a system of equations. By subtracting the right side of the equation, it can be put in a form such that the solutions are the x-intercepts of the graph. This graphing calculator shows them to be

    x = - 2.24, 2, and 2.24
  2. 5 March, 07:42
    0
    -2.24, 2.24, and 2
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