Question
Find the polynomial having roots at $ \dfrac{ 1 }{ 3 } $ , $ -\dfrac{ 4 }{ 3 } $ and $ \dfrac{ 3 }{ 4 } $ .
Answer
The polynomial generated from the given zeros is: $ P(x) = 36x^3+9x^2-43x+12 $
Explanation
Step 1: Turn the zeros into factors:
| Zero | Factor |
| $ \dfrac{ 1 }{ 3 } $ | $ 3x-1 $ |
| $ -\dfrac{ 4 }{ 3 } $ | $ 3x+4 $ |
| $ \dfrac{ 3 }{ 4 } $ | $ 4x-3 $ |
Step 2: Multiply the factors together:
$$ P(x) = \left( 3x-1 \right) \cdot \left( 3x+4 \right) \cdot \left( 4x-3 \right) = 36x^3+9x^2-43x+12 $$This page was created using
Polynomial From Roots Calculator