Question
Find the polynomial having roots at $ -2 $ , $ 25 $ , $ \dfrac{ 3 }{ 2 } $ and $ \dfrac{ 15 }{ 2 } $ .
Answer
The polynomial generated from the given zeros is: $ P(x) = 4x^4-128x^3+673x^2+765x-2250 $
Explanation
Step 1: Turn the zeros into factors:
| Zero | Factor |
| $ -2 $ | $ x+2 $ |
| $ 25 $ | $ x-25 $ |
| $ \dfrac{ 3 }{ 2 } $ | $ 2x-3 $ |
| $ \dfrac{ 15 }{ 2 } $ | $ 2x-15 $ |
Step 2: Multiply the factors together:
$$ P(x) = \left( x+2 \right) \cdot \left( x-25 \right) \cdot \left( 2x-3 \right) \cdot \left( 2x-15 \right) = 4x^4-128x^3+673x^2+765x-2250 $$This page was created using
Polynomial From Roots Calculator