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Question
Find the polynomial having roots at −3 , −1 and 2 .
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 |
−3 | x+3 |
−1 | x+1 |
2 | x−2 |
Step 2: Multiply the factors together:
P(x)=(x+3)⋅(x+1)⋅(x−2)=x3+2x2−5x−6