Let $4x^{3}+7x^{2}-6x-2=0$ be a polynomial equation. Use Descartes' Rule of signs to help list the possibilities for the nature of the solutions for the polynomial equation. Do not solve the equation.

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1. List the possible number(s) of positive real solutions.
Answer (separate by commas):

2. List the possible number(s) of negative real solutions.
Answer (separate by commas):

3. List the possible number(s) of non-real complex solutions.
Answer (separate by commas):

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