Questions: Find the simplest polynomial that has roots of x=5/2, x=1/3 and x=3 and write it in standard form

Find the simplest polynomial that has roots of x=5/2, x=1/3 and x=3 and write it in standard form
Transcript text: Find the simplest polynomial that has roots of $x=\frac{5}{2}, x=\frac{1}{3}$ and $x=3$ and write it in standard form
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Solution

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Solution Steps

Step 1: Define the Roots

The roots of the polynomial are given as \( x = \frac{5}{2}, x = \frac{1}{3}, x = 3 \).

Step 2: Construct the Polynomial

Using the roots, we can construct the polynomial in factored form: \[ P(x) = (x - \frac{5}{2})(x - \frac{1}{3})(x - 3) \]

Step 3: Expand the Polynomial

Expanding the polynomial gives us the standard form: \[ P(x) = x^3 - \frac{35}{6}x^2 + \frac{28}{3}x - \frac{15}{6} \] This can be simplified to: \[ P(x) = x^3 - 5.8333x^2 + 9.3333x - 2.5 \]

Step 4: Factor the Polynomial

The polynomial can be factored as: \[ P(x) = 9.3333 \cdot \left(0.1071x^3 - 0.625x^2 + 1.0x - 0.2679\right) \] This shows the polynomial in a factorized form, although it is not in the simplest integer coefficients.

Step 5: Final Representation

The polynomial in standard form is: \[ P(x) = x^3 - \frac{35}{6}x^2 + \frac{28}{3}x - \frac{15}{6} \] And its factorized representation is: \[ P(x) = 9.3333 \cdot \left(0.1071x^3 - 0.625x^2 + 1.0x - 0.2679\right) \]

Final Answer

\(\boxed{P(x) = x^3 - \frac{35}{6}x^2 + \frac{28}{3}x - \frac{15}{6}}\)

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