please help me with this homework problem

2. Draw the intermediate code trees for questions 7.1(f), 7.1(h), 7.2(g), 7.2(j) on p. 160 7.1 Suppose a certain compiler translates all expressions and subexpressions into Tree.Exp trees, and does not use the Nx and Cx constructors to represent expressions in different ways. Draw a picture of the IR tree that results from each of the following expressions. Assume all variables are nonescaping unless specified otherwise. e, a