Question
Find the polynomial having roots at $ 4 $ , $ 5 $ , $ -7 $ and $ 9 $ .
Answer
The polynomial generated from the given zeros is: $ P(x) = x^4-11x^3-25x^2+527x-1260 $
Explanation
Step 1: Turn the zeros into factors:
| Zero | Factor |
| $ 4 $ | $ x-4 $ |
| $ 5 $ | $ x-5 $ |
| $ -7 $ | $ x+7 $ |
| $ 9 $ | $ x-9 $ |
Step 2: Multiply the factors together:
$$ P(x) = \left( x-4 \right) \cdot \left( x-5 \right) \cdot \left( x+7 \right) \cdot \left( x-9 \right) = x^4-11x^3-25x^2+527x-1260 $$This page was created using
Polynomial From Roots Calculator