Question

I will awarde medal!!!!
Please help!!!!!
What are the possible number of positive real, negative real, and complex zeros of
f(x) = –7x4 – 12x3 + 9x2 – 17x + 3?

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 1

http://www.youtube.com/watch?v=5YAmwfT3Esc

Answer 2

Plot it to see that it has two real roots. So it has two complex roots.

Answer 3

So is it A or C

Answer 4

You can also see from the graph that one of the real roots is positive and one is negative

Answer 5

So it is A????????

Answer 6

yes

Answer 7

Ok thank youI have 2 or 3 more questions can you help me plese????????????????????????????????????????????????