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

User Punit
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2 Answers

5 votes

Answer:

c: x=-1,3,7

Explanation:

User KrisF
by
8.0k points
4 votes
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

Use the x-intercept method to find all real solutions of the equation. x^3-9x^2+11x-example-1
User Hardbyte
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