Question 7 6 pts Express the following decimal numbers 68 and -68 as an 8-bit binary number sign-magnitude form, 1's complement form, and 2's complement form. 68 -68 Sign Magnitude 1's Complement 2's Complement Note: No blanks between any bits. Question 8 6 pts Given the 8-bit binary number: 1001 0 0 1 1 What decimal number does this represent if the computer uses: 1. signed-magnitude representation: 2. signed-1's complement: 3. signed-2's complement