Question
Use the Factor Theorem to determine if \( x - 3 \) is a factor of \( f(x) = x^{3} - 4x^{2} + 5x - 6 \).
Ask by Hodgson Morrison. in Ethiopia
Dec 01,2024
Real Tutor Solution
Tutor-Verified Answer
Answer
Yes, \( x - 3 \) is a factor of \( f(x) \).
Solution
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Bonus Knowledge
To use the Factor Theorem, we need to evaluate \( f(3) \). If \( f(3) = 0 \), then \( x - 3 \) is a factor of \( f(x) \). First, let's calculate \( f(3) \): \[ f(3) = (3)^3 - 4(3)^2 + 5(3) - 6 \] \[ = 27 - 36 + 15 - 6 \] \[ = 27 - 36 + 15 - 6 = 0 \] Since \( f(3) = 0 \), it confirms that \( x - 3 \) is indeed a factor of \( f(x) = x^{3} - 4x^{2} + 5x - 6 \).