Questions: 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
Solution
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:
\[
P(x) = 9.3333 \cdot \left(0.1071x^3 - 0.625x^2 + 1.0x - 0.2679\right)
\]