Question

State how many imaginary and real zeros the function has.

f(x) = x3 + 5x2 - 28x - 32

Answer 1

Did you use synthetic division to find a real 0?

Answer 2

no i didnt. what am i dividing by for synthetic division?

Answer 3

You have the following choices:
\[\pm1, \pm2,\pm \pm4, \pm8, \pm16,\pm32\]

Answer 4

I believe its 1,8,and 4?

Answer 5

i think those are the real zero's so there are 3. thanks

Answer 6

hmmmm have you covered Descartes Law of Signs yet?

Answer 7

no not yet

Answer 8

seems they only want the amount of complex and real ones, not necessarily get them

Answer 9

http://www.youtube.com/watch?v=5YAmwfT3Esc <-- descartes rule of signs

Answer 10

I don't believe 1 works.

Answer 11

that is what they want. the answer choices are
1 imaginary; 2 real

2 imaginary; 1 real

0 imaginary; 3 real

3 imaginary; 0 real