Problems 44-51
See Example 6 and 7. It is a good idea to first use the binomial theorem using
a and b. For Problem 45 write
(x+3)^3 = a^3 + 3a^2b + 3ab^2 + b^2
and then note that x = a and b = -1
Note: Homework Hints are given only for the levels 1 and 2 problems.