Question
Find the polynomial having roots at $ 10 $ , $ 20 $ and $ -10 $ .
Answer
The polynomial generated from the given zeros is: $ P(x) = x^3-20x^2-100x+2000 $
Explanation
Step 1: Turn the zeros into factors:
| Zero | Factor |
| $ 10 $ | $ x-10 $ |
| $ 20 $ | $ x-20 $ |
| $ -10 $ | $ x+10 $ |
Step 2: Multiply the factors together:
$$ P(x) = \left( x-10 \right) \cdot \left( x-20 \right) \cdot \left( x+10 \right) = x^3-20x^2-100x+2000 $$This page was created using
Polynomial From Roots Calculator