◀ back to index
Question
Find the polynomial having roots at −2 , 1 and 3 .
Answer
The polynomial generated from the given zeros is: P(x)=x3−2x2−5x+6
Explanation
Step 1: Turn the zeros into factors:
Zero | Factor |
−2 | x+2 |
1 | x−1 |
3 | x−3 |
Step 2: Multiply the factors together:
P(x)=(x+2)⋅(x−1)⋅(x−3)=x3−2x2−5x+6