Question

Use the Rational Zeros Theorem to write a list of all possible rational zeros of the function.
can i please get some help I really don't understand .-.

f(x) = 3x^3 + 39x^2 + 39x + 27

Answer 1

list all the factors of 27 (last term)

then list all the factors of 3 (first coefficient)

Answer 2

then you divide each factor of 27 by each factor of 3

Answer 3

Ohh okay, don't i have to do something with -/+

Answer 4

don't worry about the plus/minus until you reach the end

Answer 5

let's say you determine that 1, 2, 3, 4 are the possible rational roots

you would just add on the negative versions of these numbers to get -1, -2, -3, -4

or you can just combine each pair to get

plus/minus 1
plus/minus 2
plus/minus 3
plus/minus 4
etc etc

Answer 6

When I find the factors which is 1,3,9,27. I need to divide by 3?

Answer 7

the factors of 3 are: 1, 3

Answer 8

so you will divide each number in this list: 1, 3, 9, 27

by each number in this list: 1, 3

Answer 9

the best way may be to use a table

Answer 10

ohhhhh okay..