anonymous
  • anonymous
Find a cubic function with the given zeros. -2, 5, -6 i get u put (x+2)+(x-5)....... im just not sure what to do after that
Mathematics
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
3(x+1) is what i got
AbdullahM
  • AbdullahM
That's wrong.
AbdullahM
  • AbdullahM
If r is a zero of a function, then (x-r) is a factor of the function. So, if we have -2, 5, and -6 as the zeros of a function, then what are all of the factors of the function? :)

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More answers

Serenity74
  • Serenity74
I am sorry you don't add them you mutiply them.
AbdullahM
  • AbdullahM
Exactly, why the answer was wrong.
AbdullahM
  • AbdullahM
Exactly why the answer was wrong.*
Serenity74
  • Serenity74
No, if you add them together you get 3(x+1)
Serenity74
  • Serenity74
When you are actually solving for Cubic functions with given zeros you multply all of them together in order to get an equation.
AbdullahM
  • AbdullahM
There is no reason to add them whatsoever. We need to find a cubic function. That means the highest degree is 3.
Serenity74
  • Serenity74
Ik that's why I reposted my explaniation....
AbdullahM
  • AbdullahM
@jon321 Do you understand?
anonymous
  • anonymous
no idea what just happened. these are possible answers f(x) = x3 + 3x2 + 28x - 60 f(x) = x3 - 3x2 - 28x - 60 f(x) = x3 + 3x2 - 28x - 60 f(x) = x3 + 3x2 - 28x + 60
anonymous
  • anonymous
i think its C
AbdullahM
  • AbdullahM
If r is a zero of a function, then (x-r) is a factor of the function. So, if we have -2, 5, and -6 as the zeros of a function, then what are all of the factors of the function?
AbdullahM
  • AbdullahM
@jon321 You're correct! C is the answer. :)
Serenity74
  • Serenity74
That is correct but do you know why? Cause we are all here to teach you and help you gain the knowledge.
wolf1728
  • wolf1728
To get that equation you would multiply these 3 terms (x+2)*(x-5)*(x+6)

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