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noname [10]
4 years ago
8

Use the x-intercept method to find all real solutions of the equation. x^3-11x^2+31x-21=0

Mathematics
2 answers:
Georgia [21]4 years ago
8 0

Answer:

c. x=1,3,\:or\:7

Step-by-step explanation:

The given equation is

x^3-11x^2+31x-21=0

To find all real solutions using the x-intercept method, we to graph the corresponding function using a graphing tool.

The corresponding function is;

f(x)=x^3-11x^2+31x-21

From the graph the x-intercepts are

(1,0),(3,0) and (7,0).

Therefore the real solutions are

x=1,3,\:or\:7

julsineya [31]4 years ago
6 0

Answer:

C. is the answer

Step-by-step explanation:

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