**(a)** From the sum of 3x – y + 11 and – y – 11, subtract 3x – y – 11.

**(b)** From the sum of 4 + 3x and 5 – 4x + 2x2, subtract the sum of 3x2 – 5x and – x2 + 2x + 5

**(a)** From the sum of 3x – y + 11 and – y – 11, subtract 3x – y – 11.

**(b)** From the sum of 4 + 3x and 5 – 4x + 2x2, subtract the sum of 3x2 – 5x and – x2 + 2x + 5