1. It is known that the assignment statement is as follows: a=-(a-b)* (c+d)+(ab)*(c+td) a. make postfix notation from the above statement b. make a DAG from the above statement c. make three address codes from the above statement d. make a table of implementation1 quadruple and triple 2. Given a series of statements that can be executed as follows a = b + c; if (c