Question
Find the polynomial having roots at $ \dfrac{ 1 }{ 21 } $ and $ -\dfrac{ 1 }{ 9 } $ .
Answer
The polynomial generated from the given zeros is: $ P(x) = 189x^2+12x-1 $
Explanation
Step 1: Turn the zeros into factors:
| Zero | Factor |
| $ \dfrac{ 1 }{ 21 } $ | $ 21x-1 $ |
| $ -\dfrac{ 1 }{ 9 } $ | $ 9x+1 $ |
Step 2: Multiply the factors together:
$$ P(x) = \left( 21x-1 \right) \cdot \left( 9x+1 \right) = 189x^2+12x-1 $$This page was created using
Polynomial From Roots Calculator