Question

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

Answer 1

3(x+1) is what i got

Answer 2

That's wrong.

Answer 3

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? :)

Answer 4

I am sorry you don't add them you mutiply them.

Answer 5

Exactly, why the answer was wrong.

Answer 6

Exactly why the answer was wrong.*

Answer 7

No, if you add them together you get 3(x+1)

Answer 8

When you are actually solving for Cubic functions with given zeros you multply all of them together in order to get an equation.

Answer 9

There is no reason to add them whatsoever. We need to find a cubic function.

That means the highest degree is 3.

Answer 10

Ik that's why I reposted my explaniation....

Answer 11

@jon321 Do you understand?

Answer 12

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

Answer 13

i think its C

Answer 14

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?

Answer 15

@jon321 You're correct! C is the answer. :)

Answer 16

That is correct but do you know why? Cause we are all here to teach you and help you gain the knowledge.

Answer 17

To get that equation you would multiply these 3 terms
(x+2)*(x-5)*(x+6)