Final answer:
To represent negative 66 in signed 8-bit hexadecimal form, we need to convert -66 to binary and then to hexadecimal. The signed 8-bit hexadecimal form of -66 is BE.
Step-by-step explanation:
To represent -66 in signed 8-bit hexadecimal form, we need to convert -66 to binary and then to hexadecimal. In binary form, -66 is represented as 10111110.
Since we are using 8 bits, we need to sign extend the binary representation to the left most bit. The leftmost bit will be 1 for negative numbers, making the extended binary representation 110111110.
Finally, we can convert the signed binary to hexadecimal. The signed 8-bit hexadecimal form of -66 is BE.