1. 87 in hexadecimal, convert to binary 01010010, separate into nibbles (4 bits each) to get 0101 and 0010. That's 52. Hence, 82 in hexadecimal is 52.
2. 42 in binary is 00101010 so 2s complement for 42 is 11010110.
3. 34 + (-29) = 00100010 + 11100011 = 00000101
4. The agile approach is a much...