67.5 Chapter 6. Simplifying through simplifiction. Additional exercises. page 114

67.5.1 problem 6.1 (a)
67.5.2 problem 6.1 (b)
67.5.3 problem 6.1 (c)
67.5.4 problem 6.2
67.5.5 problem 6.3 (a)
67.5.6 problem 6.3 (b)
67.5.7 problem 6.3 (c)
67.5.8 problem 6.4
67.5.9 problem 6.5 (a)
67.5.10 problem 6.5 (b)
67.5.11 problem 6.5 (c)
67.5.12 problem 6.6
67.5.13 problem 6.7 (a)
67.5.14 problem 6.7 (b)
67.5.15 problem 6.7 (c)
67.5.16 problem 6.7 (d)
67.5.17 problem 6.7 (e)
67.5.18 problem 6.7 (f)
67.5.19 problem 6.7 (g)
67.5.20 problem 6.7 (h)
67.5.21 problem 6.7 (i)
67.5.22 problem 6.7 (j)
67.5.23 problem 6.7 (k)
67.5.24 problem 6.7 (L)
67.5.25 problem 6.7 (m)
67.5.26 problem 6.7 (n)
67.5.27 problem 6.7 (o)
67.5.28 problem 6.7 (p)