Chapter 16. Equations of order one and higher degree. Exercises at page 235

89.29.1 problem 6
89.29.2 problem 8
89.29.3 problem 9
89.29.4 problem 10
89.29.5 problem 11
89.29.6 problem 12
89.29.7 problem 13
89.29.8 problem 14
89.29.9 problem 15
89.29.10 problem 16