Question
Find the polynomial having roots at $ 2 $ , $ -4 $ , $ -7 $ , $ 3 $ and $ 9 $ .
Answer
The polynomial generated from the given zeros is: $ P(x) = x^5-3x^4-75x^3+115x^2+834x-1512 $
Explanation
Step 1: Turn the zeros into factors:
| Zero | Factor |
| $ 2 $ | $ x-2 $ |
| $ -4 $ | $ x+4 $ |
| $ -7 $ | $ x+7 $ |
| $ 3 $ | $ x-3 $ |
| $ 9 $ | $ x-9 $ |
Step 2: Multiply the factors together:
$$ P(x) = \left( x-2 \right) \cdot \left( x+4 \right) \cdot \left( x+7 \right) \cdot \left( x-3 \right) \cdot \left( x-9 \right) = x^5-3x^4-75x^3+115x^2+834x-1512 $$This page was created using
Polynomial From Roots Calculator