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Question
Find the polynomial having roots at 0 , 5 , −8 and 7 .
Answer
The polynomial generated from the given zeros is: P(x)=x4−4x3−61x2+280x
Explanation
Step 1: Turn the zeros into factors:
Zero | Factor |
0 | x |
5 | x−5 |
−8 | x+8 |
7 | x−7 |
Step 2: Multiply the factors together:
P(x)=x⋅(x−5)⋅(x+8)⋅(x−7)=x4−4x3−61x2+280x