0 Question 13 Question 13 Let f(x) = -61 + 12x + 272 -281 + 2427- 12x + 29. Use Descartes' Rule of Signs to answer Let f(x) = -67 + 12r" + 271 28x + 242 - 12:x + 29. Use Descartes Rule of Signs to answer the following questions. the following questions. (a) List the possible number of positive real zeros (counting multiplicities) of /(x): (a) List the possible number of positive real zeros (counting multiplicities) of / (x): (b) List the possible number of negative real zeros (counting multiplicities) of / (z): (b) List the possible number of negative real zeros (counting multiplicities) of /(z): (c) May anything definitive be said about the exact number of positive real zeros? (c) May anything definitive be said about the exact number of positive real zeros? select an answer Select an answer Select an answer No conclusion may be made about the exact number of postive real zeros { real zeros? (d) May anything definitive be said about the exact number of negative real zeros? There are no positive real zeros. Select an answer There are exactly two positive real zeros. Select an answer There is exactly one positive real zero There are exactly two real negative zeros No conclusion may be made about the exact number of negative real zeros Submit Question There is exactly one negative real zero. There are no negative real zeros