Question
Find the polynomial having roots at $ 5 $ , $ -1 $ and $ \dfrac{ 1 }{ 2 } $ .
Answer
The polynomial generated from the given zeros is: $ P(x) = 2x^3-9x^2-6x+5 $
Explanation
Step 1: Turn the zeros into factors:
| Zero | Factor |
| $ 5 $ | $ x-5 $ |
| $ -1 $ | $ x+1 $ |
| $ \dfrac{ 1 }{ 2 } $ | $ 2x-1 $ |
Step 2: Multiply the factors together:
$$ P(x) = \left( x-5 \right) \cdot \left( x+1 \right) \cdot \left( 2x-1 \right) = 2x^3-9x^2-6x+5 $$This page was created using
Polynomial From Roots Calculator