◀ back to index
Question
Find the polynomial having roots at 32 , 21 and −1 .
Answer
The polynomial generated from the given zeros is: P(x)=6x3−x2−5x+2
Explanation
Step 1: Turn the zeros into factors:
Zero | Factor |
32 | 3x−2 |
21 | 2x−1 |
−1 | x+1 |
Step 2: Multiply the factors together:
P(x)=(3x−2)⋅(2x−1)⋅(x+1)=6x3−x2−5x+2