4. Zxax215x+1820 5. x4x311x2+9x+1830 6. x37x2+6>0 7. x4 + 3x3 - 2x2 -16x+16

5. x4x3 +18 <0 7. -x4+ - 16 <0 8. + +18 20 In your solution, include each of the following: 1) The full process of factoring the polynomial function that is part of the inequality, including using the factor theorem 2) Using the zero product property to determine zeros of the polynomial function 3) Creating an appropriate interval chart that shows intervals where the function is positive and where it is negative 4) The solution to the inequality, including a number line representation Finally, make connections to the graph of the corresponding polynomial function (include a Desmos graph or hand sketch).