Question
Find the polynomial having roots at $ \dfrac{ 3 }{ 5 } $ and $ -\dfrac{ 7 }{ 8 } $ .
Answer
The polynomial generated from the given zeros is: $ P(x) = 40x^2+11x-21 $
Explanation
Step 1: Turn the zeros into factors:
| Zero | Factor |
| $ \dfrac{ 3 }{ 5 } $ | $ 5x-3 $ |
| $ -\dfrac{ 7 }{ 8 } $ | $ 8x+7 $ |
Step 2: Multiply the factors together:
$$ P(x) = \left( 5x-3 \right) \cdot \left( 8x+7 \right) = 40x^2+11x-21 $$This page was created using
Polynomial From Roots Calculator