◀ back to index
Question
Find the polynomial having roots at −3 , −2 , 2 , 4 and 0 .
Answer
The polynomial generated from the given zeros is: P(x)=x5−x4−16x3+4x2+48x
Explanation
Step 1: Turn the zeros into factors:
Zero | Factor |
−3 | x+3 |
−2 | x+2 |
2 | x−2 |
4 | x−4 |
0 | x |
Step 2: Multiply the factors together:
P(x)=(x+3)⋅(x+2)⋅(x−2)⋅(x−4)⋅x=x5−x4−16x3+4x2+48x