8. a) Give an example of a function, p(x), such that p(x) is the result of subtraction of two other functions s(x) and t(x). [3] b) Determine two other functions, different from the ones found in a) that produce the same function p(x) through the process of multiplication. c) Determine two other functions, different from the ones found in a) and b) that produce the same function p(x) through the process of composition. COMMUNICATION 9. Describe the technique you use when combining functions graphically through any of the four arithmetic operations (+,-,x,+).