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Question
Find the polynomial having roots at 2 , 5 , 4 and 1 .
Answer
The polynomial generated from the given zeros is: P(x)=x4−12x3+49x2−78x+40
Explanation
Step 1: Turn the zeros into factors:
Zero | Factor |
2 | x−2 |
5 | x−5 |
4 | x−4 |
1 | x−1 |
Step 2: Multiply the factors together:
P(x)=(x−2)⋅(x−5)⋅(x−4)⋅(x−1)=x4−12x3+49x2−78x+40