Question

What are the possible number of positive real, negative real, and complex zeros of
f(x) = -7x4 - 12x3 + 9x2 - 17x + 3?

Answer 1

Positive Real: 3 or 1
Negative Real: 1
Complex: 2 or 0
Positive Real: 3 or 1
Negative Real: 2 or 0
Complex: 1
Positive Real: 1
Negative Real: 3 or 1
Complex: 2 or 0
Positive Real: 4, 2 or 0
Negative Real: 1
Complex: 0 or 1 or 3

Answer 2

have you covered Descartes Rule of Signs yet?

Answer 3

no

Answer 4

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

Answer 5

ok