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Question
Find the polynomial having roots at 10 , 20 and −10 .
Answer
The polynomial generated from the given zeros is: P(x)=x3−20x2−100x+2000
Explanation
Step 1: Turn the zeros into factors:
Zero | Factor |
10 | x−10 |
20 | x−20 |
−10 | x+10 |
Step 2: Multiply the factors together:
P(x)=(x−10)⋅(x−20)⋅(x+10)=x3−20x2−100x+2000