Find the maximum number of positive and negative REAL zeros.

 Name:

1. Find the maximum number of positive and negative real zeros for this equation:

y = xł - x˛ - x - 1

2. Find the maximum number of positive and negative real zeros for this equation:

y = 2x^4 - 7xł + 9x˛ -3x - 7

3. Find the maximum number of positive and negative real zeros for this equation:

y = x^5 - 68x^4 + 1085xł + 2450x˛ - 51

4. Find the maximum number of positive and negative real zeros for this equation:

y = 2xł + x - 3

5. Find the maximum number of positive and negative real zeros for this equation:

y = x˛ -5x - 3

6. Find the maximum number of positive and negative real zeros for this equation:

y = - xł - 2x˛ - 2x - 5

7. Find the maximum number of positive and negative real zeros for this equation:

y = 3xł - x˛ + 27x - 9

8. Find the maximum number of positive and negative real zeros for this equation:

y = xł + 3x˛ - 3x - 9

9. Find the maximum number of positive and negative real zeros for this equation:

y = xł - 6x˛ + 7x + 4

10. Find the maximum number of positive and negative real zeros for this equation:

y = - 2xł - x˛ - 9x + 9

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