C. Add the following algebraic expressions. 1. 2x + 3y and 3x + 2y 2. 3x2 + 4x – 1 and 2x2 – 2x – 5 - D. Subtract the following algebraic expressions. 1. 3a - 2b and a + 3b 2. 4x2 + 4x - 3 and 2x2 + 4x – 2 - -​