Question

What are the possible numbers of positive, negative, and complex zeros of f(x) = x6 + x5 + x4 + 4x3 − 12x2 + 12?
Select one:
a. Positive: 2 or 0; negative: 4, 2, or 0; complex: 6, 4, 2, or 0
b. Positive: 4, 2, or 0; negative: 2 or 0; complex: 4, 2, or 0
c. Positive: 2 or 0; negative: 2 or 0; complex: 4, 2, or 0
d. Positive: 2 or 0; negative: 0; complex: 6, 4, 2, or 0

Answer 1

try and figure a way to start @openstudy

Answer 2

Use Descartes Rule of Signs