| 1) 2a + b | \( 2(1) + 1 = 2 + 1 = 3 \) | \( 2(2) + (-1) = 4 - 1 = 3 \) | \( 2(-1) + (-3) = -2 - 3 = -5 \) |
| 2) 2(a + b) | \( 2(1 + 1) = 2(2) = 4 \) | \( 2(2 + (-1)) = 2(1) = 2 \) | \( 2(-1 + (-3)) = 2(-4) = -8 \) |
| 3) 2a + b2 | \( 2(1) + 1^2 = 2 + 1 = 3 \) | \( 2(2) + (-1)^2 = 4 + 1 = 5 \) | \( 2(-1) + (-3)^2 = -2 + 9 = 7 \) |
| 4) 2(a + b2) | \( 2(1 + 1^2) = 2(1 + 1) = 2(2) = 4 \) | \( 2(2 + (-1)^2) = 2(2 + 1) = 2(3) = 6 \) | \( 2(-1 + (-3)^2) = 2(-1 + 9) = 2(8) = 16 \) |
| 5) 2(a + b)2 | \( 2(1 + 1)^2 = 2(2)^2 = 2(4) = 8 \) | \( 2(2 + (-1))^2 = 2(1)^2 = 2(1) = 2 \) | \( 2(-1 + (-3))^2 = 2(-4)^2 = 2(16) = 32 \) |
| 6) 2a2 + b | \( 2(1)^2 + 1 = 2(1) + 1 = 2 + 1 = 3 \) | \( 2(2)^2 + (-1) = 2(4) - 1 = 8 - 1 = 7 \) | \( 2(-1)^2 + (-3) = 2(1) - 3 = 2 - 3 = -1 \) |
| 7) 2(a2 + b) | \( 2(1^2 + 1) = 2(1 + 1) = 2(2) = 4 \) | \( 2(2^2 + (-1)) = 2(4 - 1) = 2(3) = 6 \) | \( 2((-1)^2 + (-3)) = 2(1 - 3) = 2(-2) = -4 \) |
| 8) 2a2 + b2 | \( 2(1)^2 + 1^2 = 2(1) + 1 = 2 + 1 = 3 \) | \( 2(2)^2 + (-1)^2 = 2(4) + 1 = 8 + 1 = 9 \) | \( 2(-1)^2 + (-3)^2 = 2(1) + 9 = 2 + 9 = 11 \) |