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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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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.

User IGRACH
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2 Answers

4 votes

Answer:

-2.24, 2.24, and 2

Explanation:

User Urish
by
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4 votes
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
What are the roots of the polynomial equation x3-5x+5=2x2-5? Use a graphing calculator-example-1
User Pavel Kutakov
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