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Question
Find the polynomial having roots at −5 , 3 and 3 .
Answer
The polynomial generated from the given zeros is: P(x)=x3−x2−21x+45
Explanation
Step 1: Turn the zeros into factors:
Zero | Factor |
−5 | x+5 |
3 | x−3 |
3 | x−3 |
Step 2: Multiply the factors together:
P(x)=(x+5)⋅(x−3)⋅(x−3)=x3−x2−21x+45