1. Faced with the problem of multiplying 56 times 53, Brook is having trouble deciding which of these four answers is correct: 513, 59, 2513, or 259. Your assistance is needed. Once you have answered Brook's question, experiment with other examples of this type until you are able to formulate the commonbase principle for multiplication of exponential expressions. 4. Faced with the problem of calculating (5\")3, Brook is having trouble deciding which ofthese three answers is correct: 5\