Question

Use the Rational Zeros Theorem to write a list of all possible rational zeros of the function.

Answer 1

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

Answer 2

@mathmale can you help if you're available?

Answer 3

So far I have
"P = 1, 3, 9, 27
Q = 1, 3
P/Q = 1, 3, 9, 27, 1/3

Therefore the numbers we need to check are: 1/3, -1/3, 1, -1, 3, -3, 9, -9, 27, -27"

Is this the list they're asking for??

Answer 4

its been a long time since...
if i remember correctly you first multiply the coefficeints of the first term and the last
- in this case its 3 * 27 = 81

Answer 5

and the posible roots would be the negative and positive factors of 81
+/- 1, +/- 3, +/- 9, +/- 27, +/-81

Answer 6

- * not +/- 81

Answer 7

- just up to +/-27

Answer 8

Okay thanks so much!

Answer 9

yw