Question

Find the possible positive, negative, and complex zeros of this function using Descartes' Rule:

f(x) = x^3 - 12x^2 + 28x - 9

My answer:
Positive: 3 or 1
Negative: 0
Complex: 2 or 0

Answer 1

i just need to know if my answer right or wrong.

Answer 2

Your answer is correct

Answer 3

There is a difference between actual and possible. Lusis gave you the actual, while you correctly listed the possible.

Answer 4

you're right

Answer 5

oh ok. thanks, i was asking for the possible not the actual.