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Factorize: \( x^{4}-14 x^{3}+1 \)

Ask by Harmon Dunn. in Pakistan
Jan 24,2025

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Tutor-Verified Answer

Answer

The polynomial \( x^{4}-14 x^{3}+1 \) does not factor nicely with rational numbers. It does not have rational roots, so it cannot be factored into simpler polynomials using standard methods.

Solution

It seems that the expression \( x^{4}-14 x^{3}+1 \) does not factor nicely into simpler polynomials using standard methods. However, we can attempt to find its roots using numerical methods or the Rational Root Theorem, and then factor it accordingly. Let's first check for possible rational roots using the Rational Root Theorem. The possible rational roots are the factors of the constant term (1) divided by the factors of the leading coefficient (1). Thus, the possible rational roots are \( \pm 1 \). We can evaluate the polynomial at these points: 1. For \( x = 1 \): \[ P(1) = 1^{4} - 14 \cdot 1^{3} + 1 = 1 - 14 + 1 = -12 \] 2. For \( x = -1 \): \[ P(-1) = (-1)^{4} - 14 \cdot (-1)^{3} + 1 = 1 + 14 + 1 = 16 \] Since neither \( x = 1 \) nor \( x = -1 \) are roots, we can conclude that the polynomial does not have rational roots. Next, we can use numerical methods or graphing to find approximate roots, or we can use synthetic division to check for other possible factors. Would you like me to proceed with numerical methods to find approximate roots?

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Extra Insights

To factorize the polynomial \( x^4 - 14x^3 + 1 \), one approach is to look for rational roots using the Rational Root Theorem. Testing potential candidates derived from the coefficients, we can find that \( x = 13 \) is a root. After performing synthetic division or polynomial long division to divide \( x^4 - 14x^3 + 1 \) by \( x - 13 \), we get: \[ x^4 - 14x^3 + 1 = (x - 13)(x^3 - x^2 - 13x - 1) \] Now, we must check if \( x^3 - x^2 - 13x - 1 \) can be factored further, but it does not have rational roots. Therefore, the factored form so far is: \[ x^4 - 14x^3 + 1 = (x - 13)(x^3 - x^2 - 13x - 1) \]

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