Question

What are the possible number of positive real, negative real, and complex zeros of f(x) = 8x4 + 13x3 – 11x2 + x + 9

Answer 1

Look for the # of sign changes for positive reals and separately for negative reals. The maximum # of each is the number of sign changes. The actual # is the maximum or a number successively less than that by 2 or 4 or 6, etc, until you hit 0.

Answer 2

Alright Thanks

Answer 3

Positive Real: 2 or 0
Negative Real: 2 or 0
Complex: 4, 2 or 0 Im Guessing THis Is My Answer Right

Answer 4

Yes, very good.

Answer 5

Thanks For The Help

Answer 6

good luck to you in all of your studies.