Question

How to find that the zeroes of the polynomial are positive or negative?​

Answer 1

Answer:

Find zeros of a polynomial function

Use the Rational Zero Theorem to list all possible rational zeros of the function.

Use synthetic division to evaluate a given possible zero by synthetically dividing the candidate into the polynomial. ...

Repeat step two using the quotient found with synthetic division. ...

Find the zeros of the quadratic function.

Answer 2

$\huge\mathfrak\red{ANSWER::--}$

If the degree of a polynomial f(x) is even and the leading coefficient is positive, then f(x) → ∞ as x → ±∞. If f(x) is an even degree polynomial with negative leading coefficient, then f(x) → -∞ as x →±∞.
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