SOLUTION: HELP!! please i don't understand how to work this out. write a polynomial function with rational coefficients so that P(x) = 0 has the given roots The problem is -9 and -15

Algebra ->  Trigonometry-basics -> SOLUTION: HELP!! please i don't understand how to work this out. write a polynomial function with rational coefficients so that P(x) = 0 has the given roots The problem is -9 and -15      Log On


   

Question 680656: HELP!! please i don't understand how to work this out.
write a polynomial function with rational coefficients so that P(x) = 0 has the given roots
The problem is
-9 and -15
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
Starting from the end and working backward
x = -9
x = -15
...
x + 9 = 0
x + 15 = 0
...
(x+9)(x+15) = 0
x%5E2+%2B+15x+%2B+9x+%2B+135 = 0
...
highlight_green%28P%28x%29=x%5E2%2B24x%2B135%29
.....................
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