Algebra-2

Step 1: Analyzing Positive Roots

1. Look at the coefficients of : , , , , .

2. Count sign changes:

From  to , no sign change.

From  to , sign change.

From  to , sign change.

From  to , sign change.

3. Total sign changes for positive roots is .

4. According to Descartes' Rule of Signs, the number of positive roots can be  or .

Step 2: Analyzing Negative Roots

1. Calculate :

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