POLYNOMIAL FUNCTIONS Solving Polynomial Equations (Page 4 of 6)

Use the WINDOW settings shown, then re-graph the function.

WINDOW key....

GRAPH key.

 Calculator screen image. Calculator screen image.

The graph suggests that there is a single (repeated) zero in this interval. However, it is difficult to determine (by inspection) which of the values from the list of possible rational zeros it could be. We can use the scale on the x-axis to help differentiate between the possible zeros.
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