How many negative roots does the function \(f(x) = x^3 - 3x^2 + 2\) have?

Study for the Accuplacer Advanced Algebra and Functions Test. Use flashcards and multiple choice questions, each question offers hints and explanations. Ace your exam preparation!

To determine the number of negative roots of the function (f(x) = x^3 - 3x^2 + 2), we can use the concept of finding the roots by substituting negative values for (x) and investigating changes in the sign of (f(x)).

First, we evaluate the function at several negative points to observe any sign changes, which indicate the presence of roots.

  1. When (x = -1):

[

f(-1) = (-1)^3 - 3(-1)^2 + 2 = -1 - 3 + 2 = -2

]

So (f(-1) < 0).

  1. When (x = -2):

[

f(-2) = (-2)^3 - 3(-2)^2 + 2 = -8 - 12 + 2 = -18

]

Thus, (f(-2) < 0).

  1. When (x = -0.5):

[

f(-0.5) = (-0.5)^3 - 3(-0.5)^2 + 2 = -

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