Question

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

Answer 1

Number of roots of a polynomial is equal to the Degree of the Polynomial

Answer 2

Degree of a polynomial is the highest power/exponent of a polynomial....

Answer 3

which is 4

Answer 4

what do you know of descartes rule of sign?

Answer 5

counting the number of times the 'sign' of the terms changes tells us something about the roots.