Question

Use synthetic division to determine whether the number k is an upper or lower bound (as specified) for the real zeros of the function f. k = 3; f(x) = 3x^3 - 2x^2 + 5x + 2; Upper bound? Yes No

Answer 1

Yes

Explanation:

3 is an upper bound as indicated by the signs of the bottom line of synthetic division all being positive. Attached is the table.

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The graph is shown in the second attachment. 1 is also an upper bound; -1 is a lower bound.