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Question
Find the polynomial having roots at 2 , 3 , 4 and −7 .
Answer
The polynomial generated from the given zeros is: P(x)=x4−2x3−37x2+158x−168
Explanation
Step 1: Turn the zeros into factors:
Zero | Factor |
2 | x−2 |
3 | x−3 |
4 | x−4 |
−7 | x+7 |
Step 2: Multiply the factors together:
P(x)=(x−2)⋅(x−3)⋅(x−4)⋅(x+7)=x4−2x3−37x2+158x−168