<!--[if !supportLists]-->A. <!--[endif]-->Determine the number of times the graph of each of the following polynomials crosses the positive x-axis and the negative axis.
<!--[if !supportLists]-->1. <!--[endif]-->y = 3x2 – 4x + 6
<!--[if !supportLists]-->2. <!--[endif]-->y = 5x5 + 3x2 + x -10
<!--[if !supportLists]-->3. <!--[endif]-->y = x4 – 4x3 – 3x2 + x + 2
<!--[if !supportLists]-->4. <!--[endif]-->y = (x – 2) (x3 + 2x2 – x + 5)
<!--[if !supportLists]-->5. <!--[endif]-->y = 8 – x3 + x + 3x2