17. Consider the expression Cam-n)(4man?) (2m'n')(3mn) a) Substitute m = 4 and n = -3 into the expression and evaluate it: b) Simplify the original expression using the exponent laws: c) What are the advantages and disadvantages of the two methods? 18. Your job: Invent an expression containing exponents that, when simplified, is equal to: 2p q Show all the steps required to prove that your expression simplifies correctly. The simplification should include all three exponent laws if possible. (product, quotient and power of a power). . You are free to introduce any variables or operations you wish, as long as your original expression simplifies to the above expression