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11-05-2018
Mathematics

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Use the x-intercept method to find all real solutions of the equation. x^3-9x^2+11x+21=0

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Professor1994 Professor1994

11-05-2018

We must graph y=x^3-9x^2+11x+21. Please, see the attached file.
Then we see were the graph cuts the x-axis, and these values of x are the real solutions of the given equation:

The real solutions of the given equation are:x = -1, 3, and 7

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alonamahanay alonamahanay

03-11-2020

Answer:

c: x=-1,3,7

Step-by-step explanation:

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